Finding the Fourth Proportional to 148,978.30, 205,388.82 and 101,148.61

Step by Step Solution

1. Step 1: Write the proportion equation
   148,978.30 : 205,388.82 = 101,148.61 : x
2. Step 2: Convert to fraction form
   148,978.30/205,388.82 = 101,148.61/x
3. Step 3: Cross multiply
   148,978.30x = 205,388.82 × 101,148.61
4. Step 4: Simplify right side
   148,978.30x = 20,774,793,652.54
5. Step 5: Solve for x
   x = 20,774,793,652.54/148,978.30
6. Step 6: Final answer
   x = 139,448.45