Finding the Fourth Proportional to 100,837.05, 139,139.55 and 58,387.38

Step by Step Solution

1. Step 1: Write the proportion equation
   100,837.05 : 139,139.55 = 58,387.38 : x
2. Step 2: Convert to fraction form
   100,837.05/139,139.55 = 58,387.38/x
3. Step 3: Cross multiply
   100,837.05x = 139,139.55 × 58,387.38
4. Step 4: Simplify right side
   100,837.05x = 8,123,993,778.88
5. Step 5: Solve for x
   x = 8,123,993,778.88/100,837.05
6. Step 6: Final answer
   x = 80,565.56