Finding the Fourth Proportional to 115,123.32, 158,890.14 and 72,705.24

Step by Step Solution

1. Step 1: Write the proportion equation
   115,123.32 : 158,890.14 = 72,705.24 : x
2. Step 2: Convert to fraction form
   115,123.32/158,890.14 = 72,705.24/x
3. Step 3: Cross multiply
   115,123.32x = 158,890.14 × 72,705.24
4. Step 4: Simplify right side
   115,123.32x = 11,552,145,762.33
5. Step 5: Solve for x
   x = 11,552,145,762.33/115,123.32
6. Step 6: Final answer
   x = 100,345.84