Finding the Fourth Proportional to 155,914.86, 215,162.49 and 84,294.87

Step by Step Solution

1. Step 1: Write the proportion equation
   155,914.86 : 215,162.49 = 84,294.87 : x
2. Step 2: Convert to fraction form
   155,914.86/215,162.49 = 84,294.87/x
3. Step 3: Cross multiply
   155,914.86x = 215,162.49 × 84,294.87
4. Step 4: Simplify right side
   155,914.86x = 18,137,094,123.43
5. Step 5: Solve for x
   x = 18,137,094,123.43/155,914.86
6. Step 6: Final answer
   x = 116,326.91