Finding the Fourth Proportional to 107,387.47, 161,068.69 and 28,507.83

Step by Step Solution

1. Step 1: Write the proportion equation
   107,387.47 : 161,068.69 = 28,507.83 : x
2. Step 2: Convert to fraction form
   107,387.47/161,068.69 = 28,507.83/x
3. Step 3: Cross multiply
   107,387.47x = 161,068.69 × 28,507.83
4. Step 4: Simplify right side
   107,387.47x = 4,591,718,832.84
5. Step 5: Solve for x
   x = 4,591,718,832.84/107,387.47
6. Step 6: Final answer
   x = 42,758.42