Finding the Fourth Proportional to 69,018.41, 103,658.83 and 42,905.63

Step by Step Solution

1. Step 1: Write the proportion equation
   69,018.41 : 103,658.83 = 42,905.63 : x
2. Step 2: Convert to fraction form
   69,018.41/103,658.83 = 42,905.63/x
3. Step 3: Cross multiply
   69,018.41x = 103,658.83 × 42,905.63
4. Step 4: Simplify right side
   69,018.41x = 4,447,547,406.21
5. Step 5: Solve for x
   x = 4,447,547,406.21/69,018.41
6. Step 6: Final answer
   x = 64,440.02