Finding the Fourth Proportional to 42,801.18, 58,931.46 and 38,864.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,801.18 : 58,931.46 = 38,864.58 : x
2. Step 2: Convert to fraction form
   42,801.18/58,931.46 = 38,864.58/x
3. Step 3: Cross multiply
   42,801.18x = 58,931.46 × 38,864.58
4. Step 4: Simplify right side
   42,801.18x = 2,290,346,441.69
5. Step 5: Solve for x
   x = 2,290,346,441.69/42,801.18
6. Step 6: Final answer
   x = 53,511.29