Finding the Fourth Proportional to 112,385.88, 155,080.98 and 64,629.90

Step by Step Solution

1. Step 1: Write the proportion equation
   112,385.88 : 155,080.98 = 64,629.90 : x
2. Step 2: Convert to fraction form
   112,385.88/155,080.98 = 64,629.90/x
3. Step 3: Cross multiply
   112,385.88x = 155,080.98 × 64,629.90
4. Step 4: Simplify right side
   112,385.88x = 10,022,868,229.30
5. Step 5: Solve for x
   x = 10,022,868,229.30/112,385.88
6. Step 6: Final answer
   x = 89,182.63