Finding the Fourth Proportional to 112,912.86, 155,820.58 and 77,101.94

Step by Step Solution

1. Step 1: Write the proportion equation
   112,912.86 : 155,820.58 = 77,101.94 : x
2. Step 2: Convert to fraction form
   112,912.86/155,820.58 = 77,101.94/x
3. Step 3: Cross multiply
   112,912.86x = 155,820.58 × 77,101.94
4. Step 4: Simplify right side
   112,912.86x = 12,014,069,009.93
5. Step 5: Solve for x
   x = 12,014,069,009.93/112,912.86
6. Step 6: Final answer
   x = 106,401.25