Finding the Fourth Proportional to 117,685.89, 162,404.59 and 63,972.25

Step by Step Solution

1. Step 1: Write the proportion equation
   117,685.89 : 162,404.59 = 63,972.25 : x
2. Step 2: Convert to fraction form
   117,685.89/162,404.59 = 63,972.25/x
3. Step 3: Cross multiply
   117,685.89x = 162,404.59 × 63,972.25
4. Step 4: Simplify right side
   117,685.89x = 10,389,387,032.63
5. Step 5: Solve for x
   x = 10,389,387,032.63/117,685.89
6. Step 6: Final answer
   x = 88,280.65