Finding the Fourth Proportional to 62,818.28, 86,694.56 and 42,719.76

Step by Step Solution

1. Step 1: Write the proportion equation
   62,818.28 : 86,694.56 = 42,719.76 : x
2. Step 2: Convert to fraction form
   62,818.28/86,694.56 = 42,719.76/x
3. Step 3: Cross multiply
   62,818.28x = 86,694.56 × 42,719.76
4. Step 4: Simplify right side
   62,818.28x = 3,703,570,796.51
5. Step 5: Solve for x
   x = 3,703,570,796.51/62,818.28
6. Step 6: Final answer
   x = 58,956.90