Finding the Fourth Proportional to 117,280, 161,856.64 and 64,298.24

Step by Step Solution

1. Step 1: Write the proportion equation
   117,280 : 161,856.64 = 64,298.24 : x
2. Step 2: Convert to fraction form
   117,280/161,856.64 = 64,298.24/x
3. Step 3: Cross multiply
   117,280x = 161,856.64 × 64,298.24
4. Step 4: Simplify right side
   117,280x = 10,407,097,084.31
5. Step 5: Solve for x
   x = 10,407,097,084.31/117,280
6. Step 6: Final answer
   x = 88,737.19