Finding the Fourth Proportional to 42,271,813,728.48, 63,407,738,553.38 and 12,426,146,955.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271,813,728.48 : 63,407,738,553.38 = 12,426,146,955.52 : x
2. Step 2: Convert to fraction form
   42,271,813,728.48/63,407,738,553.38 = 12,426,146,955.52/x
3. Step 3: Cross multiply
   42,271,813,728.48x = 63,407,738,553.38 × 12,426,146,955.52
4. Step 4: Simplify right side
   42,271,813,728.48x = 787,913,877,381,491,064,832
5. Step 5: Solve for x
   x = 787,913,877,381,491,064,832/42,271,813,728.48
6. Step 6: Final answer
   x = 18,639,225,712.96