Finding the Fourth Proportional to 90,900.42, 136,356.84 and 30,904.47

Step by Step Solution

1. Step 1: Write the proportion equation
   90,900.42 : 136,356.84 = 30,904.47 : x
2. Step 2: Convert to fraction form
   90,900.42/136,356.84 = 30,904.47/x
3. Step 3: Cross multiply
   90,900.42x = 136,356.84 × 30,904.47
4. Step 4: Simplify right side
   90,900.42x = 4,214,035,871.07
5. Step 5: Solve for x
   x = 4,214,035,871.07/90,900.42
6. Step 6: Final answer
   x = 46,358.82