Finding the Fourth Proportional to 81,647.61, 112,667.47 and 45,830.70

Step by Step Solution

1. Step 1: Write the proportion equation
   81,647.61 : 112,667.47 = 45,830.70 : x
2. Step 2: Convert to fraction form
   81,647.61/112,667.47 = 45,830.70/x
3. Step 3: Cross multiply
   81,647.61x = 112,667.47 × 45,830.70
4. Step 4: Simplify right side
   81,647.61x = 5,163,629,017.33
5. Step 5: Solve for x
   x = 5,163,629,017.33/81,647.61
6. Step 6: Final answer
   x = 63,242.87