Finding the Fourth Proportional to 112,397.61, 168,592.50 and 28,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,397.61 : 168,592.50 = 28,158.50 : x
2. Step 2: Convert to fraction form
   112,397.61/168,592.50 = 28,158.50/x
3. Step 3: Cross multiply
   112,397.61x = 168,592.50 × 28,158.50
4. Step 4: Simplify right side
   112,397.61x = 4,747,312,332.73
5. Step 5: Solve for x
   x = 4,747,312,332.73/112,397.61
6. Step 6: Final answer
   x = 42,236.77