Finding the Fourth Proportional to 74,061.57, 102,202.43 and 42,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   74,061.57 : 102,202.43 = 42,240.72 : x
2. Step 2: Convert to fraction form
   74,061.57/102,202.43 = 42,240.72/x
3. Step 3: Cross multiply
   74,061.57x = 102,202.43 × 42,240.72
4. Step 4: Simplify right side
   74,061.57x = 4,317,104,017.75
5. Step 5: Solve for x
   x = 4,317,104,017.75/74,061.57
6. Step 6: Final answer
   x = 58,290.74