Finding the Fourth Proportional to 107,978.72, 149,012.88 and 60,234.08

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.72 : 149,012.88 = 60,234.08 : x
2. Step 2: Convert to fraction form
   107,978.72/149,012.88 = 60,234.08/x
3. Step 3: Cross multiply
   107,978.72x = 149,012.88 × 60,234.08
4. Step 4: Simplify right side
   107,978.72x = 8,975,653,734.95
5. Step 5: Solve for x
   x = 8,975,653,734.95/107,978.72
6. Step 6: Final answer
   x = 83,124.28