Finding the Fourth Proportional to 112,376.78, 168,589.78 and 42,256.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,376.78 : 168,589.78 = 42,256.09 : x
2. Step 2: Convert to fraction form
   112,376.78/168,589.78 = 42,256.09/x
3. Step 3: Cross multiply
   112,376.78x = 168,589.78 × 42,256.09
4. Step 4: Simplify right side
   112,376.78x = 7,123,944,073.81
5. Step 5: Solve for x
   x = 7,123,944,073.81/112,376.78
6. Step 6: Final answer
   x = 63,393.38