Finding the Fourth Proportional to 99,914.55, 149,978.49 and 43,016.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,914.55 : 149,978.49 = 43,016.59 : x
2. Step 2: Convert to fraction form
   99,914.55/149,978.49 = 43,016.59/x
3. Step 3: Cross multiply
   99,914.55x = 149,978.49 × 43,016.59
4. Step 4: Simplify right side
   99,914.55x = 6,451,563,213.15
5. Step 5: Solve for x
   x = 6,451,563,213.15/99,914.55
6. Step 6: Final answer
   x = 64,570.81