Finding the Fourth Proportional to 52,290.59, 78,453.63 and 19,013.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,290.59 : 78,453.63 = 19,013.31 : x
2. Step 2: Convert to fraction form
   52,290.59/78,453.63 = 19,013.31/x
3. Step 3: Cross multiply
   52,290.59x = 78,453.63 × 19,013.31
4. Step 4: Simplify right side
   52,290.59x = 1,491,663,187.82
5. Step 5: Solve for x
   x = 1,491,663,187.82/52,290.59
6. Step 6: Final answer
   x = 28,526.42