Finding the Fourth Proportional to 103,435.93, 155,142.27 and 28,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,435.93 : 155,142.27 = 28,566.72 : x
2. Step 2: Convert to fraction form
   103,435.93/155,142.27 = 28,566.72/x
3. Step 3: Cross multiply
   103,435.93x = 155,142.27 × 28,566.72
4. Step 4: Simplify right side
   103,435.93x = 4,431,905,787.25
5. Step 5: Solve for x
   x = 4,431,905,787.25/103,435.93
6. Step 6: Final answer
   x = 42,846.87