Finding the Fourth Proportional to 45,722.28, 63,084.58 and 31,386.49

Step by Step Solution

1. Step 1: Write the proportion equation
   45,722.28 : 63,084.58 = 31,386.49 : x
2. Step 2: Convert to fraction form
   45,722.28/63,084.58 = 31,386.49/x
3. Step 3: Cross multiply
   45,722.28x = 63,084.58 × 31,386.49
4. Step 4: Simplify right side
   45,722.28x = 1,980,003,539.32
5. Step 5: Solve for x
   x = 1,980,003,539.32/45,722.28
6. Step 6: Final answer
   x = 43,305.00