Finding the Fourth Proportional to 66,676.62, 91,970.37 and 42,765.42

Step by Step Solution

1. Step 1: Write the proportion equation
   66,676.62 : 91,970.37 = 42,765.42 : x
2. Step 2: Convert to fraction form
   66,676.62/91,970.37 = 42,765.42/x
3. Step 3: Cross multiply
   66,676.62x = 91,970.37 × 42,765.42
4. Step 4: Simplify right side
   66,676.62x = 3,933,151,500.61
5. Step 5: Solve for x
   x = 3,933,151,500.61/66,676.62
6. Step 6: Final answer
   x = 58,988.47