Finding the Fourth Proportional to 63,678.91, 87,789 and 50,801.87

Step by Step Solution

1. Step 1: Write the proportion equation
   63,678.91 : 87,789 = 50,801.87 : x
2. Step 2: Convert to fraction form
   63,678.91/87,789 = 50,801.87/x
3. Step 3: Cross multiply
   63,678.91x = 87,789 × 50,801.87
4. Step 4: Simplify right side
   63,678.91x = 4,459,845,365.43
5. Step 5: Solve for x
   x = 4,459,845,365.43/63,678.91
6. Step 6: Final answer
   x = 70,036.46