Finding the Fourth Proportional to 42,718.82, 58,979.69 and 38,234.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,718.82 : 58,979.69 = 38,234.79 : x
2. Step 2: Convert to fraction form
   42,718.82/58,979.69 = 38,234.79/x
3. Step 3: Cross multiply
   42,718.82x = 58,979.69 × 38,234.79
4. Step 4: Simplify right side
   42,718.82x = 2,255,076,061.42
5. Step 5: Solve for x
   x = 2,255,076,061.42/42,718.82
6. Step 6: Final answer
   x = 52,788.82