Finding the Fourth Proportional to 98,801.42, 148,229.88 and 39,678.61

Step by Step Solution

1. Step 1: Write the proportion equation
   98,801.42 : 148,229.88 = 39,678.61 : x
2. Step 2: Convert to fraction form
   98,801.42/148,229.88 = 39,678.61/x
3. Step 3: Cross multiply
   98,801.42x = 148,229.88 × 39,678.61
4. Step 4: Simplify right side
   98,801.42x = 5,881,554,857.72
5. Step 5: Solve for x
   x = 5,881,554,857.72/98,801.42
6. Step 6: Final answer
   x = 59,529.05