Finding the Fourth Proportional to 99,856.96, 137,801.76 and 55,144

Step by Step Solution

1. Step 1: Write the proportion equation
   99,856.96 : 137,801.76 = 55,144 : x
2. Step 2: Convert to fraction form
   99,856.96/137,801.76 = 55,144/x
3. Step 3: Cross multiply
   99,856.96x = 137,801.76 × 55,144
4. Step 4: Simplify right side
   99,856.96x = 7,598,940,253.44
5. Step 5: Solve for x
   x = 7,598,940,253.44/99,856.96
6. Step 6: Final answer
   x = 76,098.25