Finding the Fourth Proportional to 88,424.70, 131,832.84 and 78,451.98

Step by Step Solution

1. Step 1: Write the proportion equation
   88,424.70 : 131,832.84 = 78,451.98 : x
2. Step 2: Convert to fraction form
   88,424.70/131,832.84 = 78,451.98/x
3. Step 3: Cross multiply
   88,424.70x = 131,832.84 × 78,451.98
4. Step 4: Simplify right side
   88,424.70x = 10,342,547,327.02
5. Step 5: Solve for x
   x = 10,342,547,327.02/88,424.70
6. Step 6: Final answer
   x = 116,964.46