Finding the Fourth Proportional to 77,875.72, 107,468.52 and 42,065.76

Step by Step Solution

1. Step 1: Write the proportion equation
   77,875.72 : 107,468.52 = 42,065.76 : x
2. Step 2: Convert to fraction form
   77,875.72/107,468.52 = 42,065.76/x
3. Step 3: Cross multiply
   77,875.72x = 107,468.52 × 42,065.76
4. Step 4: Simplify right side
   77,875.72x = 4,520,744,701.20
5. Step 5: Solve for x
   x = 4,520,744,701.20/77,875.72
6. Step 6: Final answer
   x = 58,050.76