Finding the Fourth Proportional to 243,259,185.42, 335,703,096.27 and 138,835,161.54

Step by Step Solution

1. Step 1: Write the proportion equation
   243,259,185.42 : 335,703,096.27 = 138,835,161.54 : x
2. Step 2: Convert to fraction form
   243,259,185.42/335,703,096.27 = 138,835,161.54/x
3. Step 3: Cross multiply
   243,259,185.42x = 335,703,096.27 × 138,835,161.54
4. Step 4: Simplify right side
   243,259,185.42x = 46,607,393,600,123,616
5. Step 5: Solve for x
   x = 46,607,393,600,123,616/243,259,185.42
6. Step 6: Final answer
   x = 191,595,616.50