Finding the Fourth Proportional to 82,870.56, 124,264.80 and 35,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,870.56 : 124,264.80 = 35,478.72 : x
2. Step 2: Convert to fraction form
   82,870.56/124,264.80 = 35,478.72/x
3. Step 3: Cross multiply
   82,870.56x = 124,264.80 × 35,478.72
4. Step 4: Simplify right side
   82,870.56x = 4,408,756,045.06
5. Step 5: Solve for x
   x = 4,408,756,045.06/82,870.56
6. Step 6: Final answer
   x = 53,200.51