Finding the Fourth Proportional to 112,402.05, 155,113 and 61,413.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,402.05 : 155,113 = 61,413.69 : x
2. Step 2: Convert to fraction form
   112,402.05/155,113 = 61,413.69/x
3. Step 3: Cross multiply
   112,402.05x = 155,113 × 61,413.69
4. Step 4: Simplify right side
   112,402.05x = 9,526,061,696.97
5. Step 5: Solve for x
   x = 9,526,061,696.97/112,402.05
6. Step 6: Final answer
   x = 84,749.89