Finding the Fourth Proportional to 113,052.42, 169,578.45 and 42,931.62

Step by Step Solution

1. Step 1: Write the proportion equation
   113,052.42 : 169,578.45 = 42,931.62 : x
2. Step 2: Convert to fraction form
   113,052.42/169,578.45 = 42,931.62/x
3. Step 3: Cross multiply
   113,052.42x = 169,578.45 × 42,931.62
4. Step 4: Simplify right side
   113,052.42x = 7,280,277,575.59
5. Step 5: Solve for x
   x = 7,280,277,575.59/113,052.42
6. Step 6: Final answer
   x = 64,397.36