Finding the Fourth Proportional to 107,443.42, 161,164.95 and 28,557.64

Step by Step Solution

1. Step 1: Write the proportion equation
   107,443.42 : 161,164.95 = 28,557.64 : x
2. Step 2: Convert to fraction form
   107,443.42/161,164.95 = 28,557.64/x
3. Step 3: Cross multiply
   107,443.42x = 161,164.95 × 28,557.64
4. Step 4: Simplify right side
   107,443.42x = 4,602,491,303.76
5. Step 5: Solve for x
   x = 4,602,491,303.76/107,443.42
6. Step 6: Final answer
   x = 42,836.42