Finding the Fourth Proportional to 31,020.08, 42,807.47 and 16,872.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020.08 : 42,807.47 = 16,872.93 : x
2. Step 2: Convert to fraction form
   31,020.08/42,807.47 = 16,872.93/x
3. Step 3: Cross multiply
   31,020.08x = 42,807.47 × 16,872.93
4. Step 4: Simplify right side
   31,020.08x = 722,287,360.42
5. Step 5: Solve for x
   x = 722,287,360.42/31,020.08
6. Step 6: Final answer
   x = 23,284.51