Finding the Fourth Proportional to 106,131.78, 146,468.85 and 63,099.78

Step by Step Solution

1. Step 1: Write the proportion equation
   106,131.78 : 146,468.85 = 63,099.78 : x
2. Step 2: Convert to fraction form
   106,131.78/146,468.85 = 63,099.78/x
3. Step 3: Cross multiply
   106,131.78x = 146,468.85 × 63,099.78
4. Step 4: Simplify right side
   106,131.78x = 9,242,152,211.85
5. Step 5: Solve for x
   x = 9,242,152,211.85/106,131.78
6. Step 6: Final answer
   x = 87,081.85