Finding the Fourth Proportional to 63,109.34, 86,913.72 and 61,731.53

Step by Step Solution

1. Step 1: Write the proportion equation
   63,109.34 : 86,913.72 = 61,731.53 : x
2. Step 2: Convert to fraction form
   63,109.34/86,913.72 = 61,731.53/x
3. Step 3: Cross multiply
   63,109.34x = 86,913.72 × 61,731.53
4. Step 4: Simplify right side
   63,109.34x = 5,365,316,913.59
5. Step 5: Solve for x
   x = 5,365,316,913.59/63,109.34
6. Step 6: Final answer
   x = 85,016.21