Finding the Fourth Proportional to 112,463.91, 155,250.15 and 85,607.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,463.91 : 155,250.15 = 85,607.55 : x
2. Step 2: Convert to fraction form
   112,463.91/155,250.15 = 85,607.55/x
3. Step 3: Cross multiply
   112,463.91x = 155,250.15 × 85,607.55
4. Step 4: Simplify right side
   112,463.91x = 13,290,584,978.63
5. Step 5: Solve for x
   x = 13,290,584,978.63/112,463.91
6. Step 6: Final answer
   x = 118,176.44