Finding the Fourth Proportional to 105,748.30, 158,585.55 and 42,552.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,748.30 : 158,585.55 = 42,552.05 : x
2. Step 2: Convert to fraction form
   105,748.30/158,585.55 = 42,552.05/x
3. Step 3: Cross multiply
   105,748.30x = 158,585.55 × 42,552.05
4. Step 4: Simplify right side
   105,748.30x = 6,748,140,252.88
5. Step 5: Solve for x
   x = 6,748,140,252.88/105,748.30
6. Step 6: Final answer
   x = 63,813.23