Finding the Fourth Proportional to 131,337.92, 181,250.64 and 73,978.31

Step by Step Solution

1. Step 1: Write the proportion equation
   131,337.92 : 181,250.64 = 73,978.31 : x
2. Step 2: Convert to fraction form
   131,337.92/181,250.64 = 73,978.31/x
3. Step 3: Cross multiply
   131,337.92x = 181,250.64 × 73,978.31
4. Step 4: Simplify right side
   131,337.92x = 13,408,615,127.37
5. Step 5: Solve for x
   x = 13,408,615,127.37/131,337.92
6. Step 6: Final answer
   x = 102,092.49