Finding the Fourth Proportional to 21,095,732,173.42, 31,602,224,803.15 and 12,233,953,350.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,095,732,173.42 : 31,602,224,803.15 = 12,233,953,350.80 : x
2. Step 2: Convert to fraction form
   21,095,732,173.42/31,602,224,803.15 = 12,233,953,350.80/x
3. Step 3: Cross multiply
   21,095,732,173.42x = 31,602,224,803.15 × 12,233,953,350.80
4. Step 4: Simplify right side
   21,095,732,173.42x = 386,620,144,023,056,482,304
5. Step 5: Solve for x
   x = 386,620,144,023,056,482,304/21,095,732,173.42
6. Step 6: Final answer
   x = 18,326,936,502.83