Finding the Fourth Proportional to 208,332.79, 287,499.71 and 112,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,332.79 : 287,499.71 = 112,839.50 : x
2. Step 2: Convert to fraction form
   208,332.79/287,499.71 = 112,839.50/x
3. Step 3: Cross multiply
   208,332.79x = 287,499.71 × 112,839.50
4. Step 4: Simplify right side
   208,332.79x = 32,441,323,526.55
5. Step 5: Solve for x
   x = 32,441,323,526.55/208,332.79
6. Step 6: Final answer
   x = 155,718.76