Finding the Fourth Proportional to 111,978.48, 154,529.88 and 61,677.84

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.48 : 154,529.88 = 61,677.84 : x
2. Step 2: Convert to fraction form
   111,978.48/154,529.88 = 61,677.84/x
3. Step 3: Cross multiply
   111,978.48x = 154,529.88 × 61,677.84
4. Step 4: Simplify right side
   111,978.48x = 9,531,069,213.86
5. Step 5: Solve for x
   x = 9,531,069,213.86/111,978.48
6. Step 6: Final answer
   x = 85,115.19