Finding the Fourth Proportional to 62,886, 86,761.50 and 42,707.88

Step by Step Solution

1. Step 1: Write the proportion equation
   62,886 : 86,761.50 = 42,707.88 : x
2. Step 2: Convert to fraction form
   62,886/86,761.50 = 42,707.88/x
3. Step 3: Cross multiply
   62,886x = 86,761.50 × 42,707.88
4. Step 4: Simplify right side
   62,886x = 3,705,399,730.62
5. Step 5: Solve for x
   x = 3,705,399,730.62/62,886
6. Step 6: Final answer
   x = 58,922.49