Finding the Fourth Proportional to 66,373.42, 99,429.76 and 43,815.37

Step by Step Solution

1. Step 1: Write the proportion equation
   66,373.42 : 99,429.76 = 43,815.37 : x
2. Step 2: Convert to fraction form
   66,373.42/99,429.76 = 43,815.37/x
3. Step 3: Cross multiply
   66,373.42x = 99,429.76 × 43,815.37
4. Step 4: Simplify right side
   66,373.42x = 4,356,551,365.30
5. Step 5: Solve for x
   x = 4,356,551,365.30/66,373.42
6. Step 6: Final answer
   x = 65,636.99