Finding the Fourth Proportional to 42,769,477.70, 64,156,674.15 and 12,482,015.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,769,477.70 : 64,156,674.15 = 12,482,015.30 : x
2. Step 2: Convert to fraction form
   42,769,477.70/64,156,674.15 = 12,482,015.30/x
3. Step 3: Cross multiply
   42,769,477.70x = 64,156,674.15 × 12,482,015.30
4. Step 4: Simplify right side
   42,769,477.70x = 800,804,588,337,414.50
5. Step 5: Solve for x
   x = 800,804,588,337,414.50/42,769,477.70
6. Step 6: Final answer
   x = 18,723,740.19