Finding the Fourth Proportional to 52,364, 72,261.76 and 31,142.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,364 : 72,261.76 = 31,142.80 : x
2. Step 2: Convert to fraction form
   52,364/72,261.76 = 31,142.80/x
3. Step 3: Cross multiply
   52,364x = 72,261.76 × 31,142.80
4. Step 4: Simplify right side
   52,364x = 2,250,433,539.33
5. Step 5: Solve for x
   x = 2,250,433,539.33/52,364
6. Step 6: Final answer
   x = 42,976.73