Finding the Fourth Proportional to 76,388.06, 105,413.93 and 42,394.57

Step by Step Solution

1. Step 1: Write the proportion equation
   76,388.06 : 105,413.93 = 42,394.57 : x
2. Step 2: Convert to fraction form
   76,388.06/105,413.93 = 42,394.57/x
3. Step 3: Cross multiply
   76,388.06x = 105,413.93 × 42,394.57
4. Step 4: Simplify right side
   76,388.06x = 4,468,977,495.32
5. Step 5: Solve for x
   x = 4,468,977,495.32/76,388.06
6. Step 6: Final answer
   x = 58,503.62