Finding the Fourth Proportional to 42,111.90, 63,131.13 and 15,809.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,111.90 : 63,131.13 = 15,809.58 : x
2. Step 2: Convert to fraction form
   42,111.90/63,131.13 = 15,809.58/x
3. Step 3: Cross multiply
   42,111.90x = 63,131.13 × 15,809.58
4. Step 4: Simplify right side
   42,111.90x = 998,076,650.23
5. Step 5: Solve for x
   x = 998,076,650.23/42,111.90
6. Step 6: Final answer
   x = 23,700.58