Finding the Fourth Proportional to 58,628.72, 80,801.88 and 42,687.92

Step by Step Solution

1. Step 1: Write the proportion equation
   58,628.72 : 80,801.88 = 42,687.92 : x
2. Step 2: Convert to fraction form
   58,628.72/80,801.88 = 42,687.92/x
3. Step 3: Cross multiply
   58,628.72x = 80,801.88 × 42,687.92
4. Step 4: Simplify right side
   58,628.72x = 3,449,264,189.29
5. Step 5: Solve for x
   x = 3,449,264,189.29/58,628.72
6. Step 6: Final answer
   x = 58,832.33