Finding the Fourth Proportional to 42,421.01, 58,554.72 and 30,518.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,421.01 : 58,554.72 = 30,518.94 : x
2. Step 2: Convert to fraction form
   42,421.01/58,554.72 = 30,518.94/x
3. Step 3: Cross multiply
   42,421.01x = 58,554.72 × 30,518.94
4. Step 4: Simplify right side
   42,421.01x = 1,787,027,833.80
5. Step 5: Solve for x
   x = 1,787,027,833.80/42,421.01
6. Step 6: Final answer
   x = 42,126.01