Finding the Fourth Proportional to 105,109.56, 145,064.52 and 69,373.92

Step by Step Solution

1. Step 1: Write the proportion equation
   105,109.56 : 145,064.52 = 69,373.92 : x
2. Step 2: Convert to fraction form
   105,109.56/145,064.52 = 69,373.92/x
3. Step 3: Cross multiply
   105,109.56x = 145,064.52 × 69,373.92
4. Step 4: Simplify right side
   105,109.56x = 10,063,694,405.32
5. Step 5: Solve for x
   x = 10,063,694,405.32/105,109.56
6. Step 6: Final answer
   x = 95,744.81