Finding the Fourth Proportional to 77,876.61, 107,469.76 and 42,066.62

Step by Step Solution

1. Step 1: Write the proportion equation
   77,876.61 : 107,469.76 = 42,066.62 : x
2. Step 2: Convert to fraction form
   77,876.61/107,469.76 = 42,066.62/x
3. Step 3: Cross multiply
   77,876.61x = 107,469.76 × 42,066.62
4. Step 4: Simplify right side
   77,876.61x = 4,520,889,555.41
5. Step 5: Solve for x
   x = 4,520,889,555.41/77,876.61
6. Step 6: Final answer
   x = 58,051.96