Finding the Fourth Proportional to 124,138.72, 171,314.72 and 67,553.60

Step by Step Solution

1. Step 1: Write the proportion equation
   124,138.72 : 171,314.72 = 67,553.60 : x
2. Step 2: Convert to fraction form
   124,138.72/171,314.72 = 67,553.60/x
3. Step 3: Cross multiply
   124,138.72x = 171,314.72 × 67,553.60
4. Step 4: Simplify right side
   124,138.72x = 11,572,926,068.99
5. Step 5: Solve for x
   x = 11,572,926,068.99/124,138.72
6. Step 6: Final answer
   x = 93,225.76