Finding the Fourth Proportional to 42,769,479.70, 64,156,677.15 and 12,482,017.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,769,479.70 : 64,156,677.15 = 12,482,017.30 : x
2. Step 2: Convert to fraction form
   42,769,479.70/64,156,677.15 = 12,482,017.30/x
3. Step 3: Cross multiply
   42,769,479.70x = 64,156,677.15 × 12,482,017.30
4. Step 4: Simplify right side
   42,769,479.70x = 800,804,754,096,814.75
5. Step 5: Solve for x
   x = 800,804,754,096,814.75/42,769,479.70
6. Step 6: Final answer
   x = 18,723,743.19