Finding the Fourth Proportional to 72,309.35, 99,792.60 and 53,276.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,309.35 : 99,792.60 = 53,276.15 : x
2. Step 2: Convert to fraction form
   72,309.35/99,792.60 = 53,276.15/x
3. Step 3: Cross multiply
   72,309.35x = 99,792.60 × 53,276.15
4. Step 4: Simplify right side
   72,309.35x = 5,316,565,526.49
5. Step 5: Solve for x
   x = 5,316,565,526.49/72,309.35
6. Step 6: Final answer
   x = 73,525.28