Finding the Fourth Proportional to 103,245.33, 142,327.74 and 72,977.25

Step by Step Solution

1. Step 1: Write the proportion equation
   103,245.33 : 142,327.74 = 72,977.25 : x
2. Step 2: Convert to fraction form
   103,245.33/142,327.74 = 72,977.25/x
3. Step 3: Cross multiply
   103,245.33x = 142,327.74 × 72,977.25
4. Step 4: Simplify right side
   103,245.33x = 10,386,687,063.92
5. Step 5: Solve for x
   x = 10,386,687,063.92/103,245.33
6. Step 6: Final answer
   x = 100,602.00