Finding the Fourth Proportional to 99,852.78, 149,836.71 and 55,475.78

Step by Step Solution

1. Step 1: Write the proportion equation
   99,852.78 : 149,836.71 = 55,475.78 : x
2. Step 2: Convert to fraction form
   99,852.78/149,836.71 = 55,475.78/x
3. Step 3: Cross multiply
   99,852.78x = 149,836.71 × 55,475.78
4. Step 4: Simplify right side
   99,852.78x = 8,312,307,610.70
5. Step 5: Solve for x
   x = 8,312,307,610.70/99,852.78
6. Step 6: Final answer
   x = 83,245.63