Finding the Fourth Proportional to 76,082.34, 104,985.50 and 42,085.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,082.34 : 104,985.50 = 42,085.42 : x
2. Step 2: Convert to fraction form
   76,082.34/104,985.50 = 42,085.42/x
3. Step 3: Cross multiply
   76,082.34x = 104,985.50 × 42,085.42
4. Step 4: Simplify right side
   76,082.34x = 4,418,358,861.41
5. Step 5: Solve for x
   x = 4,418,358,861.41/76,082.34
6. Step 6: Final answer
   x = 58,073.38