Finding the Fourth Proportional to 127,380.86, 191,123.16 and 64,219.15

Step by Step Solution

1. Step 1: Write the proportion equation
   127,380.86 : 191,123.16 = 64,219.15 : x
2. Step 2: Convert to fraction form
   127,380.86/191,123.16 = 64,219.15/x
3. Step 3: Cross multiply
   127,380.86x = 191,123.16 × 64,219.15
4. Step 4: Simplify right side
   127,380.86x = 12,273,766,880.51
5. Step 5: Solve for x
   x = 12,273,766,880.51/127,380.86
6. Step 6: Final answer
   x = 96,354.88