Finding the Fourth Proportional to 105,530.32, 158,295.16 and 81,549.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,530.32 : 158,295.16 = 81,549.52 : x
2. Step 2: Convert to fraction form
   105,530.32/158,295.16 = 81,549.52/x
3. Step 3: Cross multiply
   105,530.32x = 158,295.16 × 81,549.52
4. Step 4: Simplify right side
   105,530.32x = 12,908,894,316.32
5. Step 5: Solve for x
   x = 12,908,894,316.32/105,530.32
6. Step 6: Final answer
   x = 122,324.03