Finding the Fourth Proportional to 103,870.08, 143,311.68 and 69,926.40

Step by Step Solution

1. Step 1: Write the proportion equation
   103,870.08 : 143,311.68 = 69,926.40 : x
2. Step 2: Convert to fraction form
   103,870.08/143,311.68 = 69,926.40/x
3. Step 3: Cross multiply
   103,870.08x = 143,311.68 × 69,926.40
4. Step 4: Simplify right side
   103,870.08x = 10,021,269,860.35
5. Step 5: Solve for x
   x = 10,021,269,860.35/103,870.08
6. Step 6: Final answer
   x = 96,478.89