Finding the Fourth Proportional to 48,561,662.10, 72,842,493.15 and 12,659,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   48,561,662.10 : 72,842,493.15 = 12,659,870.10 : x
2. Step 2: Convert to fraction form
   48,561,662.10/72,842,493.15 = 12,659,870.10/x
3. Step 3: Cross multiply
   48,561,662.10x = 72,842,493.15 × 12,659,870.10
4. Step 4: Simplify right side
   48,561,662.10x = 922,176,501,039,139.88
5. Step 5: Solve for x
   x = 922,176,501,039,139.88/48,561,662.10
6. Step 6: Final answer
   x = 18,989,805.15