Finding the Fourth Proportional to 99,662,993.10, 139,188,068.10 and 99,662,993.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,662,993.10 : 139,188,068.10 = 99,662,993.10 : x
2. Step 2: Convert to fraction form
   99,662,993.10/139,188,068.10 = 99,662,993.10/x
3. Step 3: Cross multiply
   99,662,993.10x = 139,188,068.10 × 99,662,993.10
4. Step 4: Simplify right side
   99,662,993.10x = 13,871,899,470,652,628
5. Step 5: Solve for x
   x = 13,871,899,470,652,628/99,662,993.10
6. Step 6: Final answer
   x = 139,188,068.10