Finding the Fourth Proportional to 131,557.02, 197,290.82 and 42,788.49

Step by Step Solution

1. Step 1: Write the proportion equation
   131,557.02 : 197,290.82 = 42,788.49 : x
2. Step 2: Convert to fraction form
   131,557.02/197,290.82 = 42,788.49/x
3. Step 3: Cross multiply
   131,557.02x = 197,290.82 × 42,788.49
4. Step 4: Simplify right side
   131,557.02x = 8,441,776,064.72
5. Step 5: Solve for x
   x = 8,441,776,064.72/131,557.02
6. Step 6: Final answer
   x = 64,168.19