Finding the Fourth Proportional to 92,846.38, 139,247.12 and 42,878.42

Step by Step Solution

1. Step 1: Write the proportion equation
   92,846.38 : 139,247.12 = 42,878.42 : x
2. Step 2: Convert to fraction form
   92,846.38/139,247.12 = 42,878.42/x
3. Step 3: Cross multiply
   92,846.38x = 139,247.12 × 42,878.42
4. Step 4: Simplify right side
   92,846.38x = 5,970,696,495.15
5. Step 5: Solve for x
   x = 5,970,696,495.15/92,846.38
6. Step 6: Final answer
   x = 64,307.26