Finding the Fourth Proportional to 131,728.88, 181,786.34 and 71,300.32

Step by Step Solution

1. Step 1: Write the proportion equation
   131,728.88 : 181,786.34 = 71,300.32 : x
2. Step 2: Convert to fraction form
   131,728.88/181,786.34 = 71,300.32/x
3. Step 3: Cross multiply
   131,728.88x = 181,786.34 × 71,300.32
4. Step 4: Simplify right side
   131,728.88x = 12,961,424,213.63
5. Step 5: Solve for x
   x = 12,961,424,213.63/131,728.88
6. Step 6: Final answer
   x = 98,394.70