Finding the Fourth Proportional to 107,978.08, 149,012.72 and 60,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.08 : 149,012.72 = 60,240.72 : x
2. Step 2: Convert to fraction form
   107,978.08/149,012.72 = 60,240.72/x
3. Step 3: Cross multiply
   107,978.08x = 149,012.72 × 60,240.72
4. Step 4: Simplify right side
   107,978.08x = 8,976,633,541.96
5. Step 5: Solve for x
   x = 8,976,633,541.96/107,978.08
6. Step 6: Final answer
   x = 83,133.85