Finding the Fourth Proportional to 42,068.16, 63,088.58 and 13,980.66

Step by Step Solution

1. Step 1: Write the proportion equation
   42,068.16 : 63,088.58 = 13,980.66 : x
2. Step 2: Convert to fraction form
   42,068.16/63,088.58 = 13,980.66/x
3. Step 3: Cross multiply
   42,068.16x = 63,088.58 × 13,980.66
4. Step 4: Simplify right side
   42,068.16x = 882,019,986.86
5. Step 5: Solve for x
   x = 882,019,986.86/42,068.16
6. Step 6: Final answer
   x = 20,966.45