Finding the Fourth Proportional to 113,415.48, 156,503.18 and 65,672.06

Step by Step Solution

1. Step 1: Write the proportion equation
   113,415.48 : 156,503.18 = 65,672.06 : x
2. Step 2: Convert to fraction form
   113,415.48/156,503.18 = 65,672.06/x
3. Step 3: Cross multiply
   113,415.48x = 156,503.18 × 65,672.06
4. Step 4: Simplify right side
   113,415.48x = 10,277,886,227.15
5. Step 5: Solve for x
   x = 10,277,886,227.15/113,415.48
6. Step 6: Final answer
   x = 90,621.55