Finding the Fourth Proportional to 99,396.78, 148,986.73 and 48,830.61

Step by Step Solution

1. Step 1: Write the proportion equation
   99,396.78 : 148,986.73 = 48,830.61 : x
2. Step 2: Convert to fraction form
   99,396.78/148,986.73 = 48,830.61/x
3. Step 3: Cross multiply
   99,396.78x = 148,986.73 × 48,830.61
4. Step 4: Simplify right side
   99,396.78x = 7,275,111,918.72
5. Step 5: Solve for x
   x = 7,275,111,918.72/99,396.78
6. Step 6: Final answer
   x = 73,192.63