Finding the Fourth Proportional to 113,413.99, 156,501.12 and 65,670.55

Step by Step Solution

1. Step 1: Write the proportion equation
   113,413.99 : 156,501.12 = 65,670.55 : x
2. Step 2: Convert to fraction form
   113,413.99/156,501.12 = 65,670.55/x
3. Step 3: Cross multiply
   113,413.99x = 156,501.12 × 65,670.55
4. Step 4: Simplify right side
   113,413.99x = 10,277,514,626.02
5. Step 5: Solve for x
   x = 10,277,514,626.02/113,413.99
6. Step 6: Final answer
   x = 90,619.46