Finding the Fourth Proportional to 64,828.65, 89,444.88 and 42,200.94

Step by Step Solution

1. Step 1: Write the proportion equation
   64,828.65 : 89,444.88 = 42,200.94 : x
2. Step 2: Convert to fraction form
   64,828.65/89,444.88 = 42,200.94/x
3. Step 3: Cross multiply
   64,828.65x = 89,444.88 × 42,200.94
4. Step 4: Simplify right side
   64,828.65x = 3,774,658,014.19
5. Step 5: Solve for x
   x = 3,774,658,014.19/64,828.65
6. Step 6: Final answer
   x = 58,225.15