Finding the Fourth Proportional to 156,323.86, 215,739.55 and 88,355.00

Step by Step Solution

1. Step 1: Write the proportion equation
   156,323.86 : 215,739.55 = 88,355.00 : x
2. Step 2: Convert to fraction form
   156,323.86/215,739.55 = 88,355.00/x
3. Step 3: Cross multiply
   156,323.86x = 215,739.55 × 88,355.00
4. Step 4: Simplify right side
   156,323.86x = 19,061,668,590.04
5. Step 5: Solve for x
   x = 19,061,668,590.04/156,323.86
6. Step 6: Final answer
   x = 121,937.04