Finding the Fourth Proportional to 92,930.38, 139,379.12 and 42,317.80

Step by Step Solution

1. Step 1: Write the proportion equation
   92,930.38 : 139,379.12 = 42,317.80 : x
2. Step 2: Convert to fraction form
   92,930.38/139,379.12 = 42,317.80/x
3. Step 3: Cross multiply
   92,930.38x = 139,379.12 × 42,317.80
4. Step 4: Simplify right side
   92,930.38x = 5,898,217,724.34
5. Step 5: Solve for x
   x = 5,898,217,724.34/92,930.38
6. Step 6: Final answer
   x = 63,469.21