Finding the Fourth Proportional to 99,721.52, 149,683.71 and 49,837.40

Step by Step Solution

1. Step 1: Write the proportion equation
   99,721.52 : 149,683.71 = 49,837.40 : x
2. Step 2: Convert to fraction form
   99,721.52/149,683.71 = 49,837.40/x
3. Step 3: Cross multiply
   99,721.52x = 149,683.71 × 49,837.40
4. Step 4: Simplify right side
   99,721.52x = 7,459,846,928.75
5. Step 5: Solve for x
   x = 7,459,846,928.75/99,721.52
6. Step 6: Final answer
   x = 74,806.79