Finding the Fourth Proportional to 113,820.50, 157,072.38 and 63,519.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,820.50 : 157,072.38 = 63,519.50 : x
2. Step 2: Convert to fraction form
   113,820.50/157,072.38 = 63,519.50/x
3. Step 3: Cross multiply
   113,820.50x = 157,072.38 × 63,519.50
4. Step 4: Simplify right side
   113,820.50x = 9,977,159,041.41
5. Step 5: Solve for x
   x = 9,977,159,041.41/113,820.50
6. Step 6: Final answer
   x = 87,656.96