Finding the Fourth Proportional to 52,642.62, 72,612.87 and 31,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.62 : 72,612.87 = 31,405.50 : x
2. Step 2: Convert to fraction form
   52,642.62/72,612.87 = 31,405.50/x
3. Step 3: Cross multiply
   52,642.62x = 72,612.87 × 31,405.50
4. Step 4: Simplify right side
   52,642.62x = 2,280,443,488.79
5. Step 5: Solve for x
   x = 2,280,443,488.79/52,642.62
6. Step 6: Final answer
   x = 43,319.34