Finding the Fourth Proportional to 65,053.74, 89,724.63 and 55,994.52

Step by Step Solution

1. Step 1: Write the proportion equation
   65,053.74 : 89,724.63 = 55,994.52 : x
2. Step 2: Convert to fraction form
   65,053.74/89,724.63 = 55,994.52/x
3. Step 3: Cross multiply
   65,053.74x = 89,724.63 × 55,994.52
4. Step 4: Simplify right side
   65,053.74x = 5,024,087,589.03
5. Step 5: Solve for x
   x = 5,024,087,589.03/65,053.74
6. Step 6: Final answer
   x = 77,229.80