Finding the Fourth Proportional to 103,667.60, 143,105.43 and 69,695.80

Step by Step Solution

1. Step 1: Write the proportion equation
   103,667.60 : 143,105.43 = 69,695.80 : x
2. Step 2: Convert to fraction form
   103,667.60/143,105.43 = 69,695.80/x
3. Step 3: Cross multiply
   103,667.60x = 143,105.43 × 69,695.80
4. Step 4: Simplify right side
   103,667.60x = 9,973,847,428.19
5. Step 5: Solve for x
   x = 9,973,847,428.19/103,667.60
6. Step 6: Final answer
   x = 96,209.88