Finding the Fourth Proportional to 105,345.81, 157,985.78 and 35,208.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,345.81 : 157,985.78 = 35,208.72 : x
2. Step 2: Convert to fraction form
   105,345.81/157,985.78 = 35,208.72/x
3. Step 3: Cross multiply
   105,345.81x = 157,985.78 × 35,208.72
4. Step 4: Simplify right side
   105,345.81x = 5,562,476,915.96
5. Step 5: Solve for x
   x = 5,562,476,915.96/105,345.81
6. Step 6: Final answer
   x = 52,802.07