Finding the Fourth Proportional to 144,874,164.31, 199,978,350.16 and 86,136,689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   144,874,164.31 : 199,978,350.16 = 86,136,689.31 : x
2. Step 2: Convert to fraction form
   144,874,164.31/199,978,350.16 = 86,136,689.31/x
3. Step 3: Cross multiply
   144,874,164.31x = 199,978,350.16 × 86,136,689.31
4. Step 4: Simplify right side
   144,874,164.31x = 17,225,473,016,458,308
5. Step 5: Solve for x
   x = 17,225,473,016,458,308/144,874,164.31
6. Step 6: Final answer
   x = 118,899,550.51