Finding the Fourth Proportional to 139,774.71, 209,468.08 and 63,687.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,774.71 : 209,468.08 = 63,687.30 : x
2. Step 2: Convert to fraction form
   139,774.71/209,468.08 = 63,687.30/x
3. Step 3: Cross multiply
   139,774.71x = 209,468.08 × 63,687.30
4. Step 4: Simplify right side
   139,774.71x = 13,340,456,071.36
5. Step 5: Solve for x
   x = 13,340,456,071.36/139,774.71
6. Step 6: Final answer
   x = 95,442.56