Finding the Fourth Proportional to 112,689.90, 169,128.71 and 59,401.01

Step by Step Solution

1. Step 1: Write the proportion equation
   112,689.90 : 169,128.71 = 59,401.01 : x
2. Step 2: Convert to fraction form
   112,689.90/169,128.71 = 59,401.01/x
3. Step 3: Cross multiply
   112,689.90x = 169,128.71 × 59,401.01
4. Step 4: Simplify right side
   112,689.90x = 10,046,416,542.57
5. Step 5: Solve for x
   x = 10,046,416,542.57/112,689.90
6. Step 6: Final answer
   x = 89,150.99