Finding the Fourth Proportional to 117,492.72, 162,141.18 and 63,778.20

Step by Step Solution

1. Step 1: Write the proportion equation
   117,492.72 : 162,141.18 = 63,778.20 : x
2. Step 2: Convert to fraction form
   117,492.72/162,141.18 = 63,778.20/x
3. Step 3: Cross multiply
   117,492.72x = 162,141.18 × 63,778.20
4. Step 4: Simplify right side
   117,492.72x = 10,341,072,606.28
5. Step 5: Solve for x
   x = 10,341,072,606.28/117,492.72
6. Step 6: Final answer
   x = 88,014.58