Finding the Fourth Proportional to 142,128,067.36, 196,138,085.18 and 83,391,731.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,128,067.36 : 196,138,085.18 = 83,391,731.82 : x
2. Step 2: Convert to fraction form
   142,128,067.36/196,138,085.18 = 83,391,731.82/x
3. Step 3: Cross multiply
   142,128,067.36x = 196,138,085.18 × 83,391,731.82
4. Step 4: Simplify right side
   142,128,067.36x = 16,356,294,599,018,876
5. Step 5: Solve for x
   x = 16,356,294,599,018,876/142,128,067.36
6. Step 6: Final answer
   x = 115,081,383.31