Finding the Fourth Proportional to 79,776.64, 119,699.52 and 42,832

Step by Step Solution

1. Step 1: Write the proportion equation
   79,776.64 : 119,699.52 = 42,832 : x
2. Step 2: Convert to fraction form
   79,776.64/119,699.52 = 42,832/x
3. Step 3: Cross multiply
   79,776.64x = 119,699.52 × 42,832
4. Step 4: Simplify right side
   79,776.64x = 5,126,969,840.64
5. Step 5: Solve for x
   x = 5,126,969,840.64/79,776.64
6. Step 6: Final answer
   x = 64,266.56