Finding the Fourth Proportional to 52,400.69, 72,301.74 and 31,175.81

Step by Step Solution

1. Step 1: Write the proportion equation
   52,400.69 : 72,301.74 = 31,175.81 : x
2. Step 2: Convert to fraction form
   52,400.69/72,301.74 = 31,175.81/x
3. Step 3: Cross multiply
   52,400.69x = 72,301.74 × 31,175.81
4. Step 4: Simplify right side
   52,400.69x = 2,254,065,308.91
5. Step 5: Solve for x
   x = 2,254,065,308.91/52,400.69
6. Step 6: Final answer
   x = 43,015.95