Finding the Fourth Proportional to 99,978.18, 149,967 and 33,418.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,978.18 : 149,967 = 33,418.32 : x
2. Step 2: Convert to fraction form
   99,978.18/149,967 = 33,418.32/x
3. Step 3: Cross multiply
   99,978.18x = 149,967 × 33,418.32
4. Step 4: Simplify right side
   99,978.18x = 5,011,645,195.44
5. Step 5: Solve for x
   x = 5,011,645,195.44/99,978.18
6. Step 6: Final answer
   x = 50,127.39