Finding the Fourth Proportional to 99,768.30, 149,679.78 and 49,788.06

Step by Step Solution

1. Step 1: Write the proportion equation
   99,768.30 : 149,679.78 = 49,788.06 : x
2. Step 2: Convert to fraction form
   99,768.30/149,679.78 = 49,788.06/x
3. Step 3: Cross multiply
   99,768.30x = 149,679.78 × 49,788.06
4. Step 4: Simplify right side
   99,768.30x = 7,452,265,867.43
5. Step 5: Solve for x
   x = 7,452,265,867.43/99,768.30
6. Step 6: Final answer
   x = 74,695.73