Finding the Fourth Proportional to 143,231,066.48, 214,693,636.41 and 81,687,707.36

Step by Step Solution

1. Step 1: Write the proportion equation
   143,231,066.48 : 214,693,636.41 = 81,687,707.36 : x
2. Step 2: Convert to fraction form
   143,231,066.48/214,693,636.41 = 81,687,707.36/x
3. Step 3: Cross multiply
   143,231,066.48x = 214,693,636.41 × 81,687,707.36
4. Step 4: Simplify right side
   143,231,066.48x = 17,537,830,943,114,320
5. Step 5: Solve for x
   x = 17,537,830,943,114,320/143,231,066.48
6. Step 6: Final answer
   x = 122,444,322.83