Finding the Fourth Proportional to 52,290.05, 78,426.72 and 43,462.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,290.05 : 78,426.72 = 43,462.05 : x
2. Step 2: Convert to fraction form
   52,290.05/78,426.72 = 43,462.05/x
3. Step 3: Cross multiply
   52,290.05x = 78,426.72 × 43,462.05
4. Step 4: Simplify right side
   52,290.05x = 3,408,586,025.98
5. Step 5: Solve for x
   x = 3,408,586,025.98/52,290.05
6. Step 6: Final answer
   x = 65,186.14