Finding the Fourth Proportional to 92,338.72, 138,460.61 and 42,375.78

Step by Step Solution

1. Step 1: Write the proportion equation
   92,338.72 : 138,460.61 = 42,375.78 : x
2. Step 2: Convert to fraction form
   92,338.72/138,460.61 = 42,375.78/x
3. Step 3: Cross multiply
   92,338.72x = 138,460.61 × 42,375.78
4. Step 4: Simplify right side
   92,338.72x = 5,867,376,453.97
5. Step 5: Solve for x
   x = 5,867,376,453.97/92,338.72
6. Step 6: Final answer
   x = 63,541.89