Finding the Fourth Proportional to 52,488.72, 72,424.17 and 30,985.20

Step by Step Solution

1. Step 1: Write the proportion equation
   52,488.72 : 72,424.17 = 30,985.20 : x
2. Step 2: Convert to fraction form
   52,488.72/72,424.17 = 30,985.20/x
3. Step 3: Cross multiply
   52,488.72x = 72,424.17 × 30,985.20
4. Step 4: Simplify right side
   52,488.72x = 2,244,077,392.28
5. Step 5: Solve for x
   x = 2,244,077,392.28/52,488.72
6. Step 6: Final answer
   x = 42,753.52