Finding the Fourth Proportional to 31,156,930.72, 42,998,210.45 and 18,770,923.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156,930.72 : 42,998,210.45 = 18,770,923.19 : x
2. Step 2: Convert to fraction form
   31,156,930.72/42,998,210.45 = 18,770,923.19/x
3. Step 3: Cross multiply
   31,156,930.72x = 42,998,210.45 × 18,770,923.19
4. Step 4: Simplify right side
   31,156,930.72x = 807,116,105,854,023.62
5. Step 5: Solve for x
   x = 807,116,105,854,023.62/31,156,930.72
6. Step 6: Final answer
   x = 25,904,865.70