Finding the Fourth Proportional to 148,780.16, 205,314.72 and 81,707.84

Step by Step Solution

1. Step 1: Write the proportion equation
   148,780.16 : 205,314.72 = 81,707.84 : x
2. Step 2: Convert to fraction form
   148,780.16/205,314.72 = 81,707.84/x
3. Step 3: Cross multiply
   148,780.16x = 205,314.72 × 81,707.84
4. Step 4: Simplify right side
   148,780.16x = 16,775,822,291.40
5. Step 5: Solve for x
   x = 16,775,822,291.40/148,780.16
6. Step 6: Final answer
   x = 112,755.78