Finding the Fourth Proportional to 99,355.16, 137,040.72 and 67,468.70

Step by Step Solution

1. Step 1: Write the proportion equation
   99,355.16 : 137,040.72 = 67,468.70 : x
2. Step 2: Convert to fraction form
   99,355.16/137,040.72 = 67,468.70/x
3. Step 3: Cross multiply
   99,355.16x = 137,040.72 × 67,468.70
4. Step 4: Simplify right side
   99,355.16x = 9,245,959,225.46
5. Step 5: Solve for x
   x = 9,245,959,225.46/99,355.16
6. Step 6: Final answer
   x = 93,059.68