Finding the Fourth Proportional to 76,077.50, 104,985.86 and 42,085.17

Step by Step Solution

1. Step 1: Write the proportion equation
   76,077.50 : 104,985.86 = 42,085.17 : x
2. Step 2: Convert to fraction form
   76,077.50/104,985.86 = 42,085.17/x
3. Step 3: Cross multiply
   76,077.50x = 104,985.86 × 42,085.17
4. Step 4: Simplify right side
   76,077.50x = 4,418,347,555.27
5. Step 5: Solve for x
   x = 4,418,347,555.27/76,077.50
6. Step 6: Final answer
   x = 58,076.93