Finding the Fourth Proportional to 117,866.16, 162,655.20 and 64,151.10

Step by Step Solution

1. Step 1: Write the proportion equation
   117,866.16 : 162,655.20 = 64,151.10 : x
2. Step 2: Convert to fraction form
   117,866.16/162,655.20 = 64,151.10/x
3. Step 3: Cross multiply
   117,866.16x = 162,655.20 × 64,151.10
4. Step 4: Simplify right side
   117,866.16x = 10,434,510,000.72
5. Step 5: Solve for x
   x = 10,434,510,000.72/117,866.16
6. Step 6: Final answer
   x = 88,528.46