Finding the Fourth Proportional to 76,370, 105,392.04 and 42,838.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,370 : 105,392.04 = 42,838.16 : x
2. Step 2: Convert to fraction form
   76,370/105,392.04 = 42,838.16/x
3. Step 3: Cross multiply
   76,370x = 105,392.04 × 42,838.16
4. Step 4: Simplify right side
   76,370x = 4,514,801,072.25
5. Step 5: Solve for x
   x = 4,514,801,072.25/76,370
6. Step 6: Final answer
   x = 59,117.47