Finding the Fourth Proportional to 502,112.48, 692,912.52 and 272,667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   502,112.48 : 692,912.52 = 272,667.72 : x
2. Step 2: Convert to fraction form
   502,112.48/692,912.52 = 272,667.72/x
3. Step 3: Cross multiply
   502,112.48x = 692,912.52 × 272,667.72
4. Step 4: Simplify right side
   502,112.48x = 188,934,876,987.85
5. Step 5: Solve for x
   x = 188,934,876,987.85/502,112.48
6. Step 6: Final answer
   x = 376,279.99