Finding the Fourth Proportional to 112,444.50, 155,171.33 and 62,142.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,444.50 : 155,171.33 = 62,142.42 : x
2. Step 2: Convert to fraction form
   112,444.50/155,171.33 = 62,142.42/x
3. Step 3: Cross multiply
   112,444.50x = 155,171.33 × 62,142.42
4. Step 4: Simplify right side
   112,444.50x = 9,642,721,960.82
5. Step 5: Solve for x
   x = 9,642,721,960.82/112,444.50
6. Step 6: Final answer
   x = 85,755.39