Finding the Fourth Proportional to 111,642.96, 153,913.32 and 89,058.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,642.96 : 153,913.32 = 89,058.56 : x
2. Step 2: Convert to fraction form
   111,642.96/153,913.32 = 89,058.56/x
3. Step 3: Cross multiply
   111,642.96x = 153,913.32 × 89,058.56
4. Step 4: Simplify right side
   111,642.96x = 13,707,298,644.02
5. Step 5: Solve for x
   x = 13,707,298,644.02/111,642.96
6. Step 6: Final answer
   x = 122,777.99