Finding the Fourth Proportional to 107,978.16, 149,021.40 and 60,248.08

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.16 : 149,021.40 = 60,248.08 : x
2. Step 2: Convert to fraction form
   107,978.16/149,021.40 = 60,248.08/x
3. Step 3: Cross multiply
   107,978.16x = 149,021.40 × 60,248.08
4. Step 4: Simplify right side
   107,978.16x = 8,978,253,228.91
5. Step 5: Solve for x
   x = 8,978,253,228.91/107,978.16
6. Step 6: Final answer
   x = 83,148.79