Finding the Fourth Proportional to 42,612.72, 63,914.76 and 13,030.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,612.72 : 63,914.76 = 13,030.80 : x
2. Step 2: Convert to fraction form
   42,612.72/63,914.76 = 13,030.80/x
3. Step 3: Cross multiply
   42,612.72x = 63,914.76 × 13,030.80
4. Step 4: Simplify right side
   42,612.72x = 832,860,454.61
5. Step 5: Solve for x
   x = 832,860,454.61/42,612.72
6. Step 6: Final answer
   x = 19,544.88