Finding the Fourth Proportional to 53,182.68, 79,686.54 and 42,160.20

Step by Step Solution

1. Step 1: Write the proportion equation
   53,182.68 : 79,686.54 = 42,160.20 : x
2. Step 2: Convert to fraction form
   53,182.68/79,686.54 = 42,160.20/x
3. Step 3: Cross multiply
   53,182.68x = 79,686.54 × 42,160.20
4. Step 4: Simplify right side
   53,182.68x = 3,359,600,463.71
5. Step 5: Solve for x
   x = 3,359,600,463.71/53,182.68
6. Step 6: Final answer
   x = 63,170.95