Finding the Fourth Proportional to 160,870.24, 221,978.64 and 107,189.92

Step by Step Solution

1. Step 1: Write the proportion equation
   160,870.24 : 221,978.64 = 107,189.92 : x
2. Step 2: Convert to fraction form
   160,870.24/221,978.64 = 107,189.92/x
3. Step 3: Cross multiply
   160,870.24x = 221,978.64 × 107,189.92
4. Step 4: Simplify right side
   160,870.24x = 23,793,872,663.31
5. Step 5: Solve for x
   x = 23,793,872,663.31/160,870.24
6. Step 6: Final answer
   x = 147,907.24