Finding the Fourth Proportional to 127,160.16, 175,426.20 and 76,830

Step by Step Solution

1. Step 1: Write the proportion equation
   127,160.16 : 175,426.20 = 76,830 : x
2. Step 2: Convert to fraction form
   127,160.16/175,426.20 = 76,830/x
3. Step 3: Cross multiply
   127,160.16x = 175,426.20 × 76,830
4. Step 4: Simplify right side
   127,160.16x = 13,477,994,946
5. Step 5: Solve for x
   x = 13,477,994,946/127,160.16
6. Step 6: Final answer
   x = 105,992.28