Finding the Fourth Proportional to 105,434.50, 158,151.86 and 43,105

Step by Step Solution

1. Step 1: Write the proportion equation
   105,434.50 : 158,151.86 = 43,105 : x
2. Step 2: Convert to fraction form
   105,434.50/158,151.86 = 43,105/x
3. Step 3: Cross multiply
   105,434.50x = 158,151.86 × 43,105
4. Step 4: Simplify right side
   105,434.50x = 6,817,135,925.30
5. Step 5: Solve for x
   x = 6,817,135,925.30/105,434.50
6. Step 6: Final answer
   x = 64,657.54