Finding the Fourth Proportional to 105,145.47, 157,720.40 and 37,681.89

Step by Step Solution

1. Step 1: Write the proportion equation
   105,145.47 : 157,720.40 = 37,681.89 : x
2. Step 2: Convert to fraction form
   105,145.47/157,720.40 = 37,681.89/x
3. Step 3: Cross multiply
   105,145.47x = 157,720.40 × 37,681.89
4. Step 4: Simplify right side
   105,145.47x = 5,943,202,575.15
5. Step 5: Solve for x
   x = 5,943,202,575.15/105,145.47
6. Step 6: Final answer
   x = 56,523.62