Finding the Fourth Proportional to 77,774, 107,328.12 and 42,446

Step by Step Solution

1. Step 1: Write the proportion equation
   77,774 : 107,328.12 = 42,446 : x
2. Step 2: Convert to fraction form
   77,774/107,328.12 = 42,446/x
3. Step 3: Cross multiply
   77,774x = 107,328.12 × 42,446
4. Step 4: Simplify right side
   77,774x = 4,555,649,381.52
5. Step 5: Solve for x
   x = 4,555,649,381.52/77,774
6. Step 6: Final answer
   x = 58,575.48