Finding the Fourth Proportional to 139,355.03, 209,001.01 and 64,434.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,355.03 : 209,001.01 = 64,434.35 : x
2. Step 2: Convert to fraction form
   139,355.03/209,001.01 = 64,434.35/x
3. Step 3: Cross multiply
   139,355.03x = 209,001.01 × 64,434.35
4. Step 4: Simplify right side
   139,355.03x = 13,466,844,228.69
5. Step 5: Solve for x
   x = 13,466,844,228.69/139,355.03
6. Step 6: Final answer
   x = 96,636.94