Finding the Fourth Proportional to 99,768.80, 149,680.53 and 49,788.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,768.80 : 149,680.53 = 49,788.56 : x
2. Step 2: Convert to fraction form
   99,768.80/149,680.53 = 49,788.56/x
3. Step 3: Cross multiply
   99,768.80x = 149,680.53 × 49,788.56
4. Step 4: Simplify right side
   99,768.80x = 7,452,377,300.33
5. Step 5: Solve for x
   x = 7,452,377,300.33/99,768.80
6. Step 6: Final answer
   x = 74,696.47