Finding the Fourth Proportional to 245,332,687.42, 368,002,236.54 and 81,570,443.98

Step by Step Solution

1. Step 1: Write the proportion equation
   245,332,687.42 : 368,002,236.54 = 81,570,443.98 : x
2. Step 2: Convert to fraction form
   245,332,687.42/368,002,236.54 = 81,570,443.98/x
3. Step 3: Cross multiply
   245,332,687.42x = 368,002,236.54 × 81,570,443.98
4. Step 4: Simplify right side
   245,332,687.42x = 30,018,105,820,200,784
5. Step 5: Solve for x
   x = 30,018,105,820,200,784/245,332,687.42
6. Step 6: Final answer
   x = 122,356,731.73