Finding the Fourth Proportional to 216,439,112.49, 298,677,971.61 and 117,317,731.34

Step by Step Solution

1. Step 1: Write the proportion equation
   216,439,112.49 : 298,677,971.61 = 117,317,731.34 : x
2. Step 2: Convert to fraction form
   216,439,112.49/298,677,971.61 = 117,317,731.34/x
3. Step 3: Cross multiply
   216,439,112.49x = 298,677,971.61 × 117,317,731.34
4. Step 4: Simplify right side
   216,439,112.49x = 35,040,222,029,024,736
5. Step 5: Solve for x
   x = 35,040,222,029,024,736/216,439,112.49
6. Step 6: Final answer
   x = 161,894,130.99