Finding the Fourth Proportional to 88,100.76, 121,530.06 and 57,891

Step by Step Solution

1. Step 1: Write the proportion equation
   88,100.76 : 121,530.06 = 57,891 : x
2. Step 2: Convert to fraction form
   88,100.76/121,530.06 = 57,891/x
3. Step 3: Cross multiply
   88,100.76x = 121,530.06 × 57,891
4. Step 4: Simplify right side
   88,100.76x = 7,035,496,703.46
5. Step 5: Solve for x
   x = 7,035,496,703.46/88,100.76
6. Step 6: Final answer
   x = 79,857.39