Finding the Fourth Proportional to 72,345.29, 99,837.24 and 40,080.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,345.29 : 99,837.24 = 40,080.86 : x
2. Step 2: Convert to fraction form
   72,345.29/99,837.24 = 40,080.86/x
3. Step 3: Cross multiply
   72,345.29x = 99,837.24 × 40,080.86
4. Step 4: Simplify right side
   72,345.29x = 4,001,562,439.23
5. Step 5: Solve for x
   x = 4,001,562,439.23/72,345.29
6. Step 6: Final answer
   x = 55,312.00