Finding the Fourth Proportional to 85,521.56, 118,029.69 and 71,155.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,521.56 : 118,029.69 = 71,155.98 : x
2. Step 2: Convert to fraction form
   85,521.56/118,029.69 = 71,155.98/x
3. Step 3: Cross multiply
   85,521.56x = 118,029.69 × 71,155.98
4. Step 4: Simplify right side
   85,521.56x = 8,398,518,261.05
5. Step 5: Solve for x
   x = 8,398,518,261.05/85,521.56
6. Step 6: Final answer
   x = 98,203.53