Finding the Fourth Proportional to 105,692.32, 145,837.47 and 69,863.19

Step by Step Solution

1. Step 1: Write the proportion equation
   105,692.32 : 145,837.47 = 69,863.19 : x
2. Step 2: Convert to fraction form
   105,692.32/145,837.47 = 69,863.19/x
3. Step 3: Cross multiply
   105,692.32x = 145,837.47 × 69,863.19
4. Step 4: Simplify right side
   105,692.32x = 10,188,670,875.73
5. Step 5: Solve for x
   x = 10,188,670,875.73/105,692.32
6. Step 6: Final answer
   x = 96,399.35