Finding the Fourth Proportional to 42,065.30, 63,084.29 and 13,977.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,065.30 : 63,084.29 = 13,977.81 : x
2. Step 2: Convert to fraction form
   42,065.30/63,084.29 = 13,977.81/x
3. Step 3: Cross multiply
   42,065.30x = 63,084.29 × 13,977.81
4. Step 4: Simplify right side
   42,065.30x = 881,780,219.60
5. Step 5: Solve for x
   x = 881,780,219.60/42,065.30
6. Step 6: Final answer
   x = 20,962.18