Finding the Fourth Proportional to 42,720.73, 58,526.42 and 41,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,720.73 : 58,526.42 = 41,123.45 : x
2. Step 2: Convert to fraction form
   42,720.73/58,526.42 = 41,123.45/x
3. Step 3: Cross multiply
   42,720.73x = 58,526.42 × 41,123.45
4. Step 4: Simplify right side
   42,720.73x = 2,406,808,306.55
5. Step 5: Solve for x
   x = 2,406,808,306.55/42,720.73
6. Step 6: Final answer
   x = 56,338.19