Finding the Fourth Proportional to 139,072.48, 208,429.89 and 63,115.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,072.48 : 208,429.89 = 63,115.54 : x
2. Step 2: Convert to fraction form
   139,072.48/208,429.89 = 63,115.54/x
3. Step 3: Cross multiply
   139,072.48x = 208,429.89 × 63,115.54
4. Step 4: Simplify right side
   139,072.48x = 13,155,165,059.49
5. Step 5: Solve for x
   x = 13,155,165,059.49/139,072.48
6. Step 6: Final answer
   x = 94,592.15