Finding the Fourth Proportional to 42,043.43, 63,077.31 and 12,461.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,043.43 : 63,077.31 = 12,461.96 : x
2. Step 2: Convert to fraction form
   42,043.43/63,077.31 = 12,461.96/x
3. Step 3: Cross multiply
   42,043.43x = 63,077.31 × 12,461.96
4. Step 4: Simplify right side
   42,043.43x = 786,066,598.74
5. Step 5: Solve for x
   x = 786,066,598.74/42,043.43
6. Step 6: Final answer
   x = 18,696.54