Finding the Fourth Proportional to 117,756.72, 162,505.68 and 64,043.08

Step by Step Solution

1. Step 1: Write the proportion equation
   117,756.72 : 162,505.68 = 64,043.08 : x
2. Step 2: Convert to fraction form
   117,756.72/162,505.68 = 64,043.08/x
3. Step 3: Cross multiply
   117,756.72x = 162,505.68 × 64,043.08
4. Step 4: Simplify right side
   117,756.72x = 10,407,364,264.69
5. Step 5: Solve for x
   x = 10,407,364,264.69/117,756.72
6. Step 6: Final answer
   x = 88,380.22