Finding the Fourth Proportional to 89,392.25, 123,309.73 and 53,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,392.25 : 123,309.73 = 53,561.50 : x
2. Step 2: Convert to fraction form
   89,392.25/123,309.73 = 53,561.50/x
3. Step 3: Cross multiply
   89,392.25x = 123,309.73 × 53,561.50
4. Step 4: Simplify right side
   89,392.25x = 6,604,653,486.85
5. Step 5: Solve for x
   x = 6,604,653,486.85/89,392.25
6. Step 6: Final answer
   x = 73,883.96