Finding the Fourth Proportional to 72,100.10, 99,488.30 and 40,264.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,100.10 : 99,488.30 = 40,264.94 : x
2. Step 2: Convert to fraction form
   72,100.10/99,488.30 = 40,264.94/x
3. Step 3: Cross multiply
   72,100.10x = 99,488.30 × 40,264.94
4. Step 4: Simplify right side
   72,100.10x = 4,005,890,430.20
5. Step 5: Solve for x
   x = 4,005,890,430.20/72,100.10
6. Step 6: Final answer
   x = 55,560.12