Finding the Fourth Proportional to 112,810.28, 169,178.51 and 52,820.18

Step by Step Solution

1. Step 1: Write the proportion equation
   112,810.28 : 169,178.51 = 52,820.18 : x
2. Step 2: Convert to fraction form
   112,810.28/169,178.51 = 52,820.18/x
3. Step 3: Cross multiply
   112,810.28x = 169,178.51 × 52,820.18
4. Step 4: Simplify right side
   112,810.28x = 8,936,039,925.42
5. Step 5: Solve for x
   x = 8,936,039,925.42/112,810.28
6. Step 6: Final answer
   x = 79,212.99