Finding the Fourth Proportional to 76,015.67, 104,892.54 and 42,019.57

Step by Step Solution

1. Step 1: Write the proportion equation
   76,015.67 : 104,892.54 = 42,019.57 : x
2. Step 2: Convert to fraction form
   76,015.67/104,892.54 = 42,019.57/x
3. Step 3: Cross multiply
   76,015.67x = 104,892.54 × 42,019.57
4. Step 4: Simplify right side
   76,015.67x = 4,407,539,427.01
5. Step 5: Solve for x
   x = 4,407,539,427.01/76,015.67
6. Step 6: Final answer
   x = 57,981.98