Finding the Fourth Proportional to 117,685.72, 162,408.18 and 63,970.84

Step by Step Solution

1. Step 1: Write the proportion equation
   117,685.72 : 162,408.18 = 63,970.84 : x
2. Step 2: Convert to fraction form
   117,685.72/162,408.18 = 63,970.84/x
3. Step 3: Cross multiply
   117,685.72x = 162,408.18 × 63,970.84
4. Step 4: Simplify right side
   117,685.72x = 10,389,387,697.47
5. Step 5: Solve for x
   x = 10,389,387,697.47/117,685.72
6. Step 6: Final answer
   x = 88,280.78