Finding the Fourth Proportional to 89,308, 133,921.86 and 64,243

Step by Step Solution

1. Step 1: Write the proportion equation
   89,308 : 133,921.86 = 64,243 : x
2. Step 2: Convert to fraction form
   89,308/133,921.86 = 64,243/x
3. Step 3: Cross multiply
   89,308x = 133,921.86 × 64,243
4. Step 4: Simplify right side
   89,308x = 8,603,542,051.98
5. Step 5: Solve for x
   x = 8,603,542,051.98/89,308
6. Step 6: Final answer
   x = 96,335.63