Finding the Fourth Proportional to 131,796.69, 181,878.60 and 71,366.05

Step by Step Solution

1. Step 1: Write the proportion equation
   131,796.69 : 181,878.60 = 71,366.05 : x
2. Step 2: Convert to fraction form
   131,796.69/181,878.60 = 71,366.05/x
3. Step 3: Cross multiply
   131,796.69x = 181,878.60 × 71,366.05
4. Step 4: Simplify right side
   131,796.69x = 12,979,957,261.53
5. Step 5: Solve for x
   x = 12,979,957,261.53/131,796.69
6. Step 6: Final answer
   x = 98,484.70