Finding the Fourth Proportional to 42,570.56, 58,700.40 and 29,144

Step by Step Solution

1. Step 1: Write the proportion equation
   42,570.56 : 58,700.40 = 29,144 : x
2. Step 2: Convert to fraction form
   42,570.56/58,700.40 = 29,144/x
3. Step 3: Cross multiply
   42,570.56x = 58,700.40 × 29,144
4. Step 4: Simplify right side
   42,570.56x = 1,710,764,457.60
5. Step 5: Solve for x
   x = 1,710,764,457.60/42,570.56
6. Step 6: Final answer
   x = 40,186.56