Finding the Fourth Proportional to 123,301.96, 170,102.70 and 72,288.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,301.96 : 170,102.70 = 72,288.88 : x
2. Step 2: Convert to fraction form
   123,301.96/170,102.70 = 72,288.88/x
3. Step 3: Cross multiply
   123,301.96x = 170,102.70 × 72,288.88
4. Step 4: Simplify right side
   123,301.96x = 12,296,533,667.98
5. Step 5: Solve for x
   x = 12,296,533,667.98/123,301.96
6. Step 6: Final answer
   x = 99,726.99