Finding the Fourth Proportional to 72,243.01, 99,700.61 and 40,422.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,243.01 : 99,700.61 = 40,422.16 : x
2. Step 2: Convert to fraction form
   72,243.01/99,700.61 = 40,422.16/x
3. Step 3: Cross multiply
   72,243.01x = 99,700.61 × 40,422.16
4. Step 4: Simplify right side
   72,243.01x = 4,030,113,371.22
5. Step 5: Solve for x
   x = 4,030,113,371.22/72,243.01
6. Step 6: Final answer
   x = 55,785.52