Finding the Fourth Proportional to 112,339.56, 155,091.87 and 77,934

Step by Step Solution

1. Step 1: Write the proportion equation
   112,339.56 : 155,091.87 = 77,934 : x
2. Step 2: Convert to fraction form
   112,339.56/155,091.87 = 77,934/x
3. Step 3: Cross multiply
   112,339.56x = 155,091.87 × 77,934
4. Step 4: Simplify right side
   112,339.56x = 12,086,929,796.58
5. Step 5: Solve for x
   x = 12,086,929,796.58/112,339.56
6. Step 6: Final answer
   x = 107,592.82