Finding the Fourth Proportional to 90,832.22, 136,270.35 and 28,502.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,832.22 : 136,270.35 = 28,502.72 : x
2. Step 2: Convert to fraction form
   90,832.22/136,270.35 = 28,502.72/x
3. Step 3: Cross multiply
   90,832.22x = 136,270.35 × 28,502.72
4. Step 4: Simplify right side
   90,832.22x = 3,884,075,460.01
5. Step 5: Solve for x
   x = 3,884,075,460.01/90,832.22
6. Step 6: Final answer
   x = 42,760.99