Finding the Fourth Proportional to 144,152,274.32, 198,947,616.84 and 81,431,017.01

Step by Step Solution

1. Step 1: Write the proportion equation
   144,152,274.32 : 198,947,616.84 = 81,431,017.01 : x
2. Step 2: Convert to fraction form
   144,152,274.32/198,947,616.84 = 81,431,017.01/x
3. Step 3: Cross multiply
   144,152,274.32x = 198,947,616.84 × 81,431,017.01
4. Step 4: Simplify right side
   144,152,274.32x = 16,200,506,770,002,264
5. Step 5: Solve for x
   x = 16,200,506,770,002,264/144,152,274.32
6. Step 6: Final answer
   x = 112,384,676.88