Finding the Fourth Proportional to 31,048.71, 42,848.06 and 16,902.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,048.71 : 42,848.06 = 16,902.15 : x
2. Step 2: Convert to fraction form
   31,048.71/42,848.06 = 16,902.15/x
3. Step 3: Cross multiply
   31,048.71x = 42,848.06 × 16,902.15
4. Step 4: Simplify right side
   31,048.71x = 724,224,252.82
5. Step 5: Solve for x
   x = 724,224,252.82/31,048.71
6. Step 6: Final answer
   x = 23,325.42