Finding the Fourth Proportional to 42,505.32, 63,768.06 and 12,924.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,505.32 : 63,768.06 = 12,924.84 : x
2. Step 2: Convert to fraction form
   42,505.32/63,768.06 = 12,924.84/x
3. Step 3: Cross multiply
   42,505.32x = 63,768.06 × 12,924.84
4. Step 4: Simplify right side
   42,505.32x = 824,191,972.61
5. Step 5: Solve for x
   x = 824,191,972.61/42,505.32
6. Step 6: Final answer
   x = 19,390.33