Finding the Fourth Proportional to 131,856.96, 181,978.56 and 74,498.70

Step by Step Solution

1. Step 1: Write the proportion equation
   131,856.96 : 181,978.56 = 74,498.70 : x
2. Step 2: Convert to fraction form
   131,856.96/181,978.56 = 74,498.70/x
3. Step 3: Cross multiply
   131,856.96x = 181,978.56 × 74,498.70
4. Step 4: Simplify right side
   131,856.96x = 13,557,166,147.87
5. Step 5: Solve for x
   x = 13,557,166,147.87/131,856.96
6. Step 6: Final answer
   x = 102,817.22