Finding the Fourth Proportional to 78,817.17, 118,288.80 and 41,399.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,817.17 : 118,288.80 = 41,399.31 : x
2. Step 2: Convert to fraction form
   78,817.17/118,288.80 = 41,399.31/x
3. Step 3: Cross multiply
   78,817.17x = 118,288.80 × 41,399.31
4. Step 4: Simplify right side
   78,817.17x = 4,897,074,700.73
5. Step 5: Solve for x
   x = 4,897,074,700.73/78,817.17
6. Step 6: Final answer
   x = 62,132.08