Finding the Fourth Proportional to 207,838.10, 310,978.61 and 148,004.82

Step by Step Solution

1. Step 1: Write the proportion equation
   207,838.10 : 310,978.61 = 148,004.82 : x
2. Step 2: Convert to fraction form
   207,838.10/310,978.61 = 148,004.82/x
3. Step 3: Cross multiply
   207,838.10x = 310,978.61 × 148,004.82
4. Step 4: Simplify right side
   207,838.10x = 46,026,333,011.89
5. Step 5: Solve for x
   x = 46,026,333,011.89/207,838.10
6. Step 6: Final answer
   x = 221,452.82