Finding the Fourth Proportional to 127,380.32, 190,992.72 and 52,477.28

Step by Step Solution

1. Step 1: Write the proportion equation
   127,380.32 : 190,992.72 = 52,477.28 : x
2. Step 2: Convert to fraction form
   127,380.32/190,992.72 = 52,477.28/x
3. Step 3: Cross multiply
   127,380.32x = 190,992.72 × 52,477.28
4. Step 4: Simplify right side
   127,380.32x = 10,022,778,445.40
5. Step 5: Solve for x
   x = 10,022,778,445.40/127,380.32
6. Step 6: Final answer
   x = 78,683.88