Finding the Fourth Proportional to 46,128.03, 69,148.71 and 42,019.44

Step by Step Solution

1. Step 1: Write the proportion equation
   46,128.03 : 69,148.71 = 42,019.44 : x
2. Step 2: Convert to fraction form
   46,128.03/69,148.71 = 42,019.44/x
3. Step 3: Cross multiply
   46,128.03x = 69,148.71 × 42,019.44
4. Step 4: Simplify right side
   46,128.03x = 2,905,590,070.92
5. Step 5: Solve for x
   x = 2,905,590,070.92/46,128.03
6. Step 6: Final answer
   x = 62,989.68