Finding the Fourth Proportional to 139,084.68, 208,456.01 and 64,100.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,084.68 : 208,456.01 = 64,100.76 : x
2. Step 2: Convert to fraction form
   139,084.68/208,456.01 = 64,100.76/x
3. Step 3: Cross multiply
   139,084.68x = 208,456.01 × 64,100.76
4. Step 4: Simplify right side
   139,084.68x = 13,362,188,667.57
5. Step 5: Solve for x
   x = 13,362,188,667.57/139,084.68
6. Step 6: Final answer
   x = 96,072.33