Finding the Fourth Proportional to 42,902.84, 58,890.21 and 38,081.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,902.84 : 58,890.21 = 38,081.72 : x
2. Step 2: Convert to fraction form
   42,902.84/58,890.21 = 38,081.72/x
3. Step 3: Cross multiply
   42,902.84x = 58,890.21 × 38,081.72
4. Step 4: Simplify right side
   42,902.84x = 2,242,640,487.96
5. Step 5: Solve for x
   x = 2,242,640,487.96/42,902.84
6. Step 6: Final answer
   x = 52,272.54