Finding the Fourth Proportional to 31,139,304.88, 42,598,789.72 and 31,008,148.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139,304.88 : 42,598,789.72 = 31,008,148.52 : x
2. Step 2: Convert to fraction form
   31,139,304.88/42,598,789.72 = 31,008,148.52/x
3. Step 3: Cross multiply
   31,139,304.88x = 42,598,789.72 × 31,008,148.52
4. Step 4: Simplify right side
   31,139,304.88x = 1,320,909,598,410,009.25
5. Step 5: Solve for x
   x = 1,320,909,598,410,009.25/31,139,304.88
6. Step 6: Final answer
   x = 42,419,366.89