Finding the Fourth Proportional to 42,627.66, 63,939.15 and 13,045.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,627.66 : 63,939.15 = 13,045.47 : x
2. Step 2: Convert to fraction form
   42,627.66/63,939.15 = 13,045.47/x
3. Step 3: Cross multiply
   42,627.66x = 63,939.15 × 13,045.47
4. Step 4: Simplify right side
   42,627.66x = 834,116,263.15
5. Step 5: Solve for x
   x = 834,116,263.15/42,627.66
6. Step 6: Final answer
   x = 19,567.49