Finding the Fourth Proportional to 61,080.72, 91,606.72 and 34,438.20

Step by Step Solution

1. Step 1: Write the proportion equation
   61,080.72 : 91,606.72 = 34,438.20 : x
2. Step 2: Convert to fraction form
   61,080.72/91,606.72 = 34,438.20/x
3. Step 3: Cross multiply
   61,080.72x = 91,606.72 × 34,438.20
4. Step 4: Simplify right side
   61,080.72x = 3,154,770,544.70
5. Step 5: Solve for x
   x = 3,154,770,544.70/61,080.72
6. Step 6: Final answer
   x = 51,649.20