Finding the Fourth Proportional to 103,519, 142,797.90 and 67,700.80

Step by Step Solution

1. Step 1: Write the proportion equation
   103,519 : 142,797.90 = 67,700.80 : x
2. Step 2: Convert to fraction form
   103,519/142,797.90 = 67,700.80/x
3. Step 3: Cross multiply
   103,519x = 142,797.90 × 67,700.80
4. Step 4: Simplify right side
   103,519x = 9,667,532,068.32
5. Step 5: Solve for x
   x = 9,667,532,068.32/103,519
6. Step 6: Final answer
   x = 93,388.96