Finding the Fourth Proportional to 52,488.19, 78,732.25 and 13,045.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,488.19 : 78,732.25 = 13,045.31 : x
2. Step 2: Convert to fraction form
   52,488.19/78,732.25 = 13,045.31/x
3. Step 3: Cross multiply
   52,488.19x = 78,732.25 × 13,045.31
4. Step 4: Simplify right side
   52,488.19x = 1,027,086,274.29
5. Step 5: Solve for x
   x = 1,027,086,274.29/52,488.19
6. Step 6: Final answer
   x = 19,567.95