Finding the Fourth Proportional to 31,139,501.76, 42,599,058.24 and 31,008,345.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139,501.76 : 42,599,058.24 = 31,008,345.60 : x
2. Step 2: Convert to fraction form
   31,139,501.76/42,599,058.24 = 31,008,345.60/x
3. Step 3: Cross multiply
   31,139,501.76x = 42,599,058.24 × 31,008,345.60
4. Step 4: Simplify right side
   31,139,501.76x = 1,320,926,320,140,447.75
5. Step 5: Solve for x
   x = 1,320,926,320,140,447.75/31,139,501.76
6. Step 6: Final answer
   x = 42,419,635.69