Finding the Fourth Proportional to 42,314.74, 63,459.30 and 12,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,314.74 : 63,459.30 = 12,724.72 : x
2. Step 2: Convert to fraction form
   42,314.74/63,459.30 = 12,724.72/x
3. Step 3: Cross multiply
   42,314.74x = 63,459.30 × 12,724.72
4. Step 4: Simplify right side
   42,314.74x = 807,501,823.90
5. Step 5: Solve for x
   x = 807,501,823.90/42,314.74
6. Step 6: Final answer
   x = 19,083.23