Finding the Fourth Proportional to 117,978.92, 162,807.30 and 64,263.08

Step by Step Solution

1. Step 1: Write the proportion equation
   117,978.92 : 162,807.30 = 64,263.08 : x
2. Step 2: Convert to fraction form
   117,978.92/162,807.30 = 64,263.08/x
3. Step 3: Cross multiply
   117,978.92x = 162,807.30 × 64,263.08
4. Step 4: Simplify right side
   117,978.92x = 10,462,498,544.48
5. Step 5: Solve for x
   x = 10,462,498,544.48/117,978.92
6. Step 6: Final answer
   x = 88,681.08