Finding the Fourth Proportional to 59,270.74, 88,143.80 and 57,402.07

Step by Step Solution

1. Step 1: Write the proportion equation
   59,270.74 : 88,143.80 = 57,402.07 : x
2. Step 2: Convert to fraction form
   59,270.74/88,143.80 = 57,402.07/x
3. Step 3: Cross multiply
   59,270.74x = 88,143.80 × 57,402.07
4. Step 4: Simplify right side
   59,270.74x = 5,059,636,070.30
5. Step 5: Solve for x
   x = 5,059,636,070.30/59,270.74
6. Step 6: Final answer
   x = 85,364.82