Finding the Fourth Proportional to 112,773.60, 155,616.72 and 67,442.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,773.60 : 155,616.72 = 67,442.40 : x
2. Step 2: Convert to fraction form
   112,773.60/155,616.72 = 67,442.40/x
3. Step 3: Cross multiply
   112,773.60x = 155,616.72 × 67,442.40
4. Step 4: Simplify right side
   112,773.60x = 10,495,165,076.93
5. Step 5: Solve for x
   x = 10,495,165,076.93/112,773.60
6. Step 6: Final answer
   x = 93,064.02