Finding the Fourth Proportional to 155,364.48, 214,385.52 and 87,379.98

Step by Step Solution

1. Step 1: Write the proportion equation
   155,364.48 : 214,385.52 = 87,379.98 : x
2. Step 2: Convert to fraction form
   155,364.48/214,385.52 = 87,379.98/x
3. Step 3: Cross multiply
   155,364.48x = 214,385.52 × 87,379.98
4. Step 4: Simplify right side
   155,364.48x = 18,733,002,449.89
5. Step 5: Solve for x
   x = 18,733,002,449.89/155,364.48
6. Step 6: Final answer
   x = 120,574.55