Finding the Fourth Proportional to 131,528.30, 181,510.38 and 71,100.08

Step by Step Solution

1. Step 1: Write the proportion equation
   131,528.30 : 181,510.38 = 71,100.08 : x
2. Step 2: Convert to fraction form
   131,528.30/181,510.38 = 71,100.08/x
3. Step 3: Cross multiply
   131,528.30x = 181,510.38 × 71,100.08
4. Step 4: Simplify right side
   131,528.30x = 12,905,402,538.83
5. Step 5: Solve for x
   x = 12,905,402,538.83/131,528.30
6. Step 6: Final answer
   x = 98,118.83