Finding the Fourth Proportional to 72,124.16, 99,532.16 and 40,294.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,124.16 : 99,532.16 = 40,294.40 : x
2. Step 2: Convert to fraction form
   72,124.16/99,532.16 = 40,294.40/x
3. Step 3: Cross multiply
   72,124.16x = 99,532.16 × 40,294.40
4. Step 4: Simplify right side
   72,124.16x = 4,010,588,667.90
5. Step 5: Solve for x
   x = 4,010,588,667.90/72,124.16
6. Step 6: Final answer
   x = 55,606.73