Finding the Fourth Proportional to 128,429.15, 192,589.52 and 38,484.62

Step by Step Solution

1. Step 1: Write the proportion equation
   128,429.15 : 192,589.52 = 38,484.62 : x
2. Step 2: Convert to fraction form
   128,429.15/192,589.52 = 38,484.62/x
3. Step 3: Cross multiply
   128,429.15x = 192,589.52 × 38,484.62
4. Step 4: Simplify right side
   128,429.15x = 7,411,734,060.02
5. Step 5: Solve for x
   x = 7,411,734,060.02/128,429.15
6. Step 6: Final answer
   x = 57,710.69