Finding the Fourth Proportional to 100,981.02, 139,353.09 and 55,659

Step by Step Solution

1. Step 1: Write the proportion equation
   100,981.02 : 139,353.09 = 55,659 : x
2. Step 2: Convert to fraction form
   100,981.02/139,353.09 = 55,659/x
3. Step 3: Cross multiply
   100,981.02x = 139,353.09 × 55,659
4. Step 4: Simplify right side
   100,981.02x = 7,756,253,636.31
5. Step 5: Solve for x
   x = 7,756,253,636.31/100,981.02
6. Step 6: Final answer
   x = 76,809.02