Finding the Fourth Proportional to 42,529.55, 63,803.55 and 12,946.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,529.55 : 63,803.55 = 12,946.61 : x
2. Step 2: Convert to fraction form
   42,529.55/63,803.55 = 12,946.61/x
3. Step 3: Cross multiply
   42,529.55x = 63,803.55 × 12,946.61
4. Step 4: Simplify right side
   42,529.55x = 826,039,789.42
5. Step 5: Solve for x
   x = 826,039,789.42/42,529.55
6. Step 6: Final answer
   x = 19,422.73