Finding the Fourth Proportional to 257,391,123,258.14, 355,199,808,074.80 and 141,647,882,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   257,391,123,258.14 : 355,199,808,074.80 = 141,647,882,892.50 : x
2. Step 2: Convert to fraction form
   257,391,123,258.14/355,199,808,074.80 = 141,647,882,892.50/x
3. Step 3: Cross multiply
   257,391,123,258.14x = 355,199,808,074.80 × 141,647,882,892.50
4. Step 4: Simplify right side
   257,391,123,258.14x = 50,313,300,817,617,746,919,424
5. Step 5: Solve for x
   x = 50,313,300,817,617,746,919,424/257,391,123,258.14
6. Step 6: Final answer
   x = 195,474,110,298.51