Finding the Fourth Proportional to 112,764.22, 155,612.55 and 65,019.58

Step by Step Solution

1. Step 1: Write the proportion equation
   112,764.22 : 155,612.55 = 65,019.58 : x
2. Step 2: Convert to fraction form
   112,764.22/155,612.55 = 65,019.58/x
3. Step 3: Cross multiply
   112,764.22x = 155,612.55 × 65,019.58
4. Step 4: Simplify right side
   112,764.22x = 10,117,862,643.73
5. Step 5: Solve for x
   x = 10,117,862,643.73/112,764.22
6. Step 6: Final answer
   x = 89,725.82