Finding the Fourth Proportional to 103,782.06, 143,074.89 and 87,715.98

Step by Step Solution

1. Step 1: Write the proportion equation
   103,782.06 : 143,074.89 = 87,715.98 : x
2. Step 2: Convert to fraction form
   103,782.06/143,074.89 = 87,715.98/x
3. Step 3: Cross multiply
   103,782.06x = 143,074.89 × 87,715.98
4. Step 4: Simplify right side
   103,782.06x = 12,549,954,189.74
5. Step 5: Solve for x
   x = 12,549,954,189.74/103,782.06
6. Step 6: Final answer
   x = 120,926.05