Finding the Fourth Proportional to 57,217,458.96, 78,960,464.28 and 31,112,260.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,217,458.96 : 78,960,464.28 = 31,112,260.56 : x
2. Step 2: Convert to fraction form
   57,217,458.96/78,960,464.28 = 31,112,260.56/x
3. Step 3: Cross multiply
   57,217,458.96x = 78,960,464.28 × 31,112,260.56
4. Step 4: Simplify right side
   57,217,458.96x = 2,456,638,538,617,932.50
5. Step 5: Solve for x
   x = 2,456,638,538,617,932.50/57,217,458.96
6. Step 6: Final answer
   x = 42,935,121.26