Finding the Fourth Proportional to 115,108.90, 158,847.89 and 64,121.56

Step by Step Solution

1. Step 1: Write the proportion equation
   115,108.90 : 158,847.89 = 64,121.56 : x
2. Step 2: Convert to fraction form
   115,108.90/158,847.89 = 64,121.56/x
3. Step 3: Cross multiply
   115,108.90x = 158,847.89 × 64,121.56
4. Step 4: Simplify right side
   115,108.90x = 10,185,573,791.78
5. Step 5: Solve for x
   x = 10,185,573,791.78/115,108.90
6. Step 6: Final answer
   x = 88,486.42