Finding the Fourth Proportional to 155,328.31, 214,146.61 and 101,520.82

Step by Step Solution

1. Step 1: Write the proportion equation
   155,328.31 : 214,146.61 = 101,520.82 : x
2. Step 2: Convert to fraction form
   155,328.31/214,146.61 = 101,520.82/x
3. Step 3: Cross multiply
   155,328.31x = 214,146.61 × 101,520.82
4. Step 4: Simplify right side
   155,328.31x = 21,740,339,447.42
5. Step 5: Solve for x
   x = 21,740,339,447.42/155,328.31
6. Step 6: Final answer
   x = 139,963.79