Finding the Fourth Proportional to 52,543.89, 72,491.62 and 40,448.07

Step by Step Solution

1. Step 1: Write the proportion equation
   52,543.89 : 72,491.62 = 40,448.07 : x
2. Step 2: Convert to fraction form
   52,543.89/72,491.62 = 40,448.07/x
3. Step 3: Cross multiply
   52,543.89x = 72,491.62 × 40,448.07
4. Step 4: Simplify right side
   52,543.89x = 2,932,145,837.82
5. Step 5: Solve for x
   x = 2,932,145,837.82/52,543.89
6. Step 6: Final answer
   x = 55,803.75