Finding the Fourth Proportional to 78,575.72, 108,431.58 and 42,764.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,575.72 : 108,431.58 = 42,764.94 : x
2. Step 2: Convert to fraction form
   78,575.72/108,431.58 = 42,764.94/x
3. Step 3: Cross multiply
   78,575.72x = 108,431.58 × 42,764.94
4. Step 4: Simplify right side
   78,575.72x = 4,637,070,012.81
5. Step 5: Solve for x
   x = 4,637,070,012.81/78,575.72
6. Step 6: Final answer
   x = 59,014.03