Finding the Fourth Proportional to 115,039.61, 158,832.59 and 72,036.35

Step by Step Solution

1. Step 1: Write the proportion equation
   115,039.61 : 158,832.59 = 72,036.35 : x
2. Step 2: Convert to fraction form
   115,039.61/158,832.59 = 72,036.35/x
3. Step 3: Cross multiply
   115,039.61x = 158,832.59 × 72,036.35
4. Step 4: Simplify right side
   115,039.61x = 11,441,719,684.46
5. Step 5: Solve for x
   x = 11,441,719,684.46/115,039.61
6. Step 6: Final answer
   x = 99,458.96