Finding the Fourth Proportional to 78,605.42, 108,475.32 and 42,795.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,605.42 : 108,475.32 = 42,795.58 : x
2. Step 2: Convert to fraction form
   78,605.42/108,475.32 = 42,795.58/x
3. Step 3: Cross multiply
   78,605.42x = 108,475.32 × 42,795.58
4. Step 4: Simplify right side
   78,605.42x = 4,642,264,235.09
5. Step 5: Solve for x
   x = 4,642,264,235.09/78,605.42
6. Step 6: Final answer
   x = 59,057.81