Finding the Fourth Proportional to 62,981.91, 86,886.92 and 42,557.37

Step by Step Solution

1. Step 1: Write the proportion equation
   62,981.91 : 86,886.92 = 42,557.37 : x
2. Step 2: Convert to fraction form
   62,981.91/86,886.92 = 42,557.37/x
3. Step 3: Cross multiply
   62,981.91x = 86,886.92 × 42,557.37
4. Step 4: Simplify right side
   62,981.91x = 3,697,678,589.81
5. Step 5: Solve for x
   x = 3,697,678,589.81/62,981.91
6. Step 6: Final answer
   x = 58,710.17