Finding the Fourth Proportional to 501,123, 751,728.31 and 127,146

Step by Step Solution

1. Step 1: Write the proportion equation
   501,123 : 751,728.31 = 127,146 : x
2. Step 2: Convert to fraction form
   501,123/751,728.31 = 127,146/x
3. Step 3: Cross multiply
   501,123x = 751,728.31 × 127,146
4. Step 4: Simplify right side
   501,123x = 95,579,247,385.40
5. Step 5: Solve for x
   x = 95,579,247,385.40/501,123
6. Step 6: Final answer
   x = 190,730.11