Finding the Fourth Proportional to 117,730.16, 162,514.68 and 72,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,730.16 : 162,514.68 = 72,426.50 : x
2. Step 2: Convert to fraction form
   117,730.16/162,514.68 = 72,426.50/x
3. Step 3: Cross multiply
   117,730.16x = 162,514.68 × 72,426.50
4. Step 4: Simplify right side
   117,730.16x = 11,770,369,471.02
5. Step 5: Solve for x
   x = 11,770,369,471.02/117,730.16
6. Step 6: Final answer
   x = 99,977.52