Finding the Fourth Proportional to 276,820.22, 414,967.89 and 89,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,820.22 : 414,967.89 = 89,700.50 : x
2. Step 2: Convert to fraction form
   276,820.22/414,967.89 = 89,700.50/x
3. Step 3: Cross multiply
   276,820.22x = 414,967.89 × 89,700.50
4. Step 4: Simplify right side
   276,820.22x = 37,222,827,216.95
5. Step 5: Solve for x
   x = 37,222,827,216.95/276,820.22
6. Step 6: Final answer
   x = 134,465.71