Finding the Fourth Proportional to 118,311,620.69, 163,270,105.72 and 66,100,656.29

Step by Step Solution

1. Step 1: Write the proportion equation
   118,311,620.69 : 163,270,105.72 = 66,100,656.29 : x
2. Step 2: Convert to fraction form
   118,311,620.69/163,270,105.72 = 66,100,656.29/x
3. Step 3: Cross multiply
   118,311,620.69x = 163,270,105.72 × 66,100,656.29
4. Step 4: Simplify right side
   118,311,620.69x = 10,792,261,139,648,080
5. Step 5: Solve for x
   x = 10,792,261,139,648,080/118,311,620.69
6. Step 6: Final answer
   x = 91,218,944.31