Finding the Fourth Proportional to 112,957.59, 156,043.71 and 90,266.88

Step by Step Solution

1. Step 1: Write the proportion equation
   112,957.59 : 156,043.71 = 90,266.88 : x
2. Step 2: Convert to fraction form
   112,957.59/156,043.71 = 90,266.88/x
3. Step 3: Cross multiply
   112,957.59x = 156,043.71 × 90,266.88
4. Step 4: Simplify right side
   112,957.59x = 14,085,578,845.32
5. Step 5: Solve for x
   x = 14,085,578,845.32/112,957.59
6. Step 6: Final answer
   x = 124,697.94