Finding the Fourth Proportional to 42,056.08, 63,081.08 and 10,890.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,056.08 : 63,081.08 = 10,890.32 : x
2. Step 2: Convert to fraction form
   42,056.08/63,081.08 = 10,890.32/x
3. Step 3: Cross multiply
   42,056.08x = 63,081.08 × 10,890.32
4. Step 4: Simplify right side
   42,056.08x = 686,973,147.15
5. Step 5: Solve for x
   x = 686,973,147.15/42,056.08
6. Step 6: Final answer
   x = 16,334.69