Finding the Fourth Proportional to 99,099.48, 148,611.96 and 39,915

Step by Step Solution

1. Step 1: Write the proportion equation
   99,099.48 : 148,611.96 = 39,915 : x
2. Step 2: Convert to fraction form
   99,099.48/148,611.96 = 39,915/x
3. Step 3: Cross multiply
   99,099.48x = 148,611.96 × 39,915
4. Step 4: Simplify right side
   99,099.48x = 5,931,846,383.40
5. Step 5: Solve for x
   x = 5,931,846,383.40/99,099.48
6. Step 6: Final answer
   x = 59,857.49