Finding the Fourth Proportional to 42,071.16, 63,139.38 and 15,799.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,071.16 : 63,139.38 = 15,799.80 : x
2. Step 2: Convert to fraction form
   42,071.16/63,139.38 = 15,799.80/x
3. Step 3: Cross multiply
   42,071.16x = 63,139.38 × 15,799.80
4. Step 4: Simplify right side
   42,071.16x = 997,589,576.12
5. Step 5: Solve for x
   x = 997,589,576.12/42,071.16
6. Step 6: Final answer
   x = 23,711.96