Finding the Fourth Proportional to 98,912.73, 148,200.06 and 70,688.59

Step by Step Solution

1. Step 1: Write the proportion equation
   98,912.73 : 148,200.06 = 70,688.59 : x
2. Step 2: Convert to fraction form
   98,912.73/148,200.06 = 70,688.59/x
3. Step 3: Cross multiply
   98,912.73x = 148,200.06 × 70,688.59
4. Step 4: Simplify right side
   98,912.73x = 10,476,053,085.54
5. Step 5: Solve for x
   x = 10,476,053,085.54/98,912.73
6. Step 6: Final answer
   x = 105,912.08