Finding the Fourth Proportional to 42,077.81, 63,200.79 and 26,310.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,077.81 : 63,200.79 = 26,310.89 : x
2. Step 2: Convert to fraction form
   42,077.81/63,200.79 = 26,310.89/x
3. Step 3: Cross multiply
   42,077.81x = 63,200.79 × 26,310.89
4. Step 4: Simplify right side
   42,077.81x = 1,662,869,191.61
5. Step 5: Solve for x
   x = 1,662,869,191.61/42,077.81
6. Step 6: Final answer
   x = 39,518.91