Finding the Fourth Proportional to 28,162,574.87, 42,258,267.59 and 13,407,343.83

Step by Step Solution

1. Step 1: Write the proportion equation
   28,162,574.87 : 42,258,267.59 = 13,407,343.83 : x
2. Step 2: Convert to fraction form
   28,162,574.87/42,258,267.59 = 13,407,343.83/x
3. Step 3: Cross multiply
   28,162,574.87x = 42,258,267.59 × 13,407,343.83
4. Step 4: Simplify right side
   28,162,574.87x = 566,571,123,172,238.75
5. Step 5: Solve for x
   x = 566,571,123,172,238.75/28,162,574.87
6. Step 6: Final answer
   x = 20,117,873.66