Finding the Fourth Proportional to 103,644.72, 155,543.94 and 77,052.24

Step by Step Solution

1. Step 1: Write the proportion equation
   103,644.72 : 155,543.94 = 77,052.24 : x
2. Step 2: Convert to fraction form
   103,644.72/155,543.94 = 77,052.24/x
3. Step 3: Cross multiply
   103,644.72x = 155,543.94 × 77,052.24
4. Step 4: Simplify right side
   103,644.72x = 11,985,008,995.43
5. Step 5: Solve for x
   x = 11,985,008,995.43/103,644.72
6. Step 6: Final answer
   x = 115,635.50