Finding the Fourth Proportional to 52,365, 72,263.16 and 31,143.81

Step by Step Solution

1. Step 1: Write the proportion equation
   52,365 : 72,263.16 = 31,143.81 : x
2. Step 2: Convert to fraction form
   52,365/72,263.16 = 31,143.81/x
3. Step 3: Cross multiply
   52,365x = 72,263.16 × 31,143.81
4. Step 4: Simplify right side
   52,365x = 2,250,550,125.04
5. Step 5: Solve for x
   x = 2,250,550,125.04/52,365
6. Step 6: Final answer
   x = 42,978.14