Finding the Fourth Proportional to 105,653.24, 158,484.72 and 43,280

Step by Step Solution

1. Step 1: Write the proportion equation
   105,653.24 : 158,484.72 = 43,280 : x
2. Step 2: Convert to fraction form
   105,653.24/158,484.72 = 43,280/x
3. Step 3: Cross multiply
   105,653.24x = 158,484.72 × 43,280
4. Step 4: Simplify right side
   105,653.24x = 6,859,218,681.60
5. Step 5: Solve for x
   x = 6,859,218,681.60/105,653.24
6. Step 6: Final answer
   x = 64,921.99