Finding the Fourth Proportional to 77,398.85, 116,131.10 and 42,297.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,398.85 : 116,131.10 = 42,297.50 : x
2. Step 2: Convert to fraction form
   77,398.85/116,131.10 = 42,297.50/x
3. Step 3: Cross multiply
   77,398.85x = 116,131.10 × 42,297.50
4. Step 4: Simplify right side
   77,398.85x = 4,912,054,410.11
5. Step 5: Solve for x
   x = 4,912,054,410.11/77,398.85
6. Step 6: Final answer
   x = 63,464.18