Finding the Fourth Proportional to 42,733.31, 58,888.72 and 30,774.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,733.31 : 58,888.72 = 30,774.07 : x
2. Step 2: Convert to fraction form
   42,733.31/58,888.72 = 30,774.07/x
3. Step 3: Cross multiply
   42,733.31x = 58,888.72 × 30,774.07
4. Step 4: Simplify right side
   42,733.31x = 1,812,245,591.49
5. Step 5: Solve for x
   x = 1,812,245,591.49/42,733.31
6. Step 6: Final answer
   x = 42,408.27