Finding the Fourth Proportional to 31,143,724.32, 42,972,106.32 and 17,390,572.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,143,724.32 : 42,972,106.32 = 17,390,572.32 : x
2. Step 2: Convert to fraction form
   31,143,724.32/42,972,106.32 = 17,390,572.32/x
3. Step 3: Cross multiply
   31,143,724.32x = 42,972,106.32 × 17,390,572.32
4. Step 4: Simplify right side
   31,143,724.32x = 747,309,522,700,689.12
5. Step 5: Solve for x
   x = 747,309,522,700,689.12/31,143,724.32
6. Step 6: Final answer
   x = 23,995,509.18