Finding the Fourth Proportional to 42,158.31, 63,186.71 and 15,482.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,158.31 : 63,186.71 = 15,482.85 : x
2. Step 2: Convert to fraction form
   42,158.31/63,186.71 = 15,482.85/x
3. Step 3: Cross multiply
   42,158.31x = 63,186.71 × 15,482.85
4. Step 4: Simplify right side
   42,158.31x = 978,310,275.51
5. Step 5: Solve for x
   x = 978,310,275.51/42,158.31
6. Step 6: Final answer
   x = 23,205.63