Finding the Fourth Proportional to 42,771.59, 64,122.72 and 17,830.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,771.59 : 64,122.72 = 17,830.34 : x
2. Step 2: Convert to fraction form
   42,771.59/64,122.72 = 17,830.34/x
3. Step 3: Cross multiply
   42,771.59x = 64,122.72 × 17,830.34
4. Step 4: Simplify right side
   42,771.59x = 1,143,329,899.32
5. Step 5: Solve for x
   x = 1,143,329,899.32/42,771.59
6. Step 6: Final answer
   x = 26,731.06