Finding the Fourth Proportional to 89,510.74, 134,266.10 and 42,621.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89,510.74 : 134,266.10 = 42,621.46 : x
2. Step 2: Convert to fraction form
   89,510.74/134,266.10 = 42,621.46/x
3. Step 3: Cross multiply
   89,510.74x = 134,266.10 × 42,621.46
4. Step 4: Simplify right side
   89,510.74x = 5,722,617,210.51
5. Step 5: Solve for x
   x = 5,722,617,210.51/89,510.74
6. Step 6: Final answer
   x = 63,932.19