Finding the Fourth Proportional to 42,040.42, 63,069.86 and 12,460.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,040.42 : 63,069.86 = 12,460.58 : x
2. Step 2: Convert to fraction form
   42,040.42/63,069.86 = 12,460.58/x
3. Step 3: Cross multiply
   42,040.42x = 63,069.86 × 12,460.58
4. Step 4: Simplify right side
   42,040.42x = 785,887,036.12
5. Step 5: Solve for x
   x = 785,887,036.12/42,040.42
6. Step 6: Final answer
   x = 18,693.61