Finding the Fourth Proportional to 139,784.54, 209,596.82 and 64,866.11

Step by Step Solution

1. Step 1: Write the proportion equation
   139,784.54 : 209,596.82 = 64,866.11 : x
2. Step 2: Convert to fraction form
   139,784.54/209,596.82 = 64,866.11/x
3. Step 3: Cross multiply
   139,784.54x = 209,596.82 × 64,866.11
4. Step 4: Simplify right side
   139,784.54x = 13,595,731,067.93
5. Step 5: Solve for x
   x = 13,595,731,067.93/139,784.54
6. Step 6: Final answer
   x = 97,262.05