Finding the Fourth Proportional to 107,300.90, 160,951.37 and 28,421.30

Step by Step Solution

1. Step 1: Write the proportion equation
   107,300.90 : 160,951.37 = 28,421.30 : x
2. Step 2: Convert to fraction form
   107,300.90/160,951.37 = 28,421.30/x
3. Step 3: Cross multiply
   107,300.90x = 160,951.37 × 28,421.30
4. Step 4: Simplify right side
   107,300.90x = 4,574,447,172.18
5. Step 5: Solve for x
   x = 4,574,447,172.18/107,300.90
6. Step 6: Final answer
   x = 42,631.96