Finding the Fourth Proportional to 99,979.18, 149,968.50 and 33,419.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,979.18 : 149,968.50 = 33,419.32 : x
2. Step 2: Convert to fraction form
   99,979.18/149,968.50 = 33,419.32/x
3. Step 3: Cross multiply
   99,979.18x = 149,968.50 × 33,419.32
4. Step 4: Simplify right side
   99,979.18x = 5,011,845,291.42
5. Step 5: Solve for x
   x = 5,011,845,291.42/99,979.18
6. Step 6: Final answer
   x = 50,128.89