Finding the Fourth Proportional to 113,705.37, 156,941.55 and 77,466.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,705.37 : 156,941.55 = 77,466.78 : x
2. Step 2: Convert to fraction form
   113,705.37/156,941.55 = 77,466.78/x
3. Step 3: Cross multiply
   113,705.37x = 156,941.55 × 77,466.78
4. Step 4: Simplify right side
   113,705.37x = 12,157,756,526.71
5. Step 5: Solve for x
   x = 12,157,756,526.71/113,705.37
6. Step 6: Final answer
   x = 106,923.33