Finding the Fourth Proportional to 76,132.49, 105,054.62 and 42,135.57

Step by Step Solution

1. Step 1: Write the proportion equation
   76,132.49 : 105,054.62 = 42,135.57 : x
2. Step 2: Convert to fraction form
   76,132.49/105,054.62 = 42,135.57/x
3. Step 3: Cross multiply
   76,132.49x = 105,054.62 × 42,135.57
4. Step 4: Simplify right side
   76,132.49x = 4,426,536,084.16
5. Step 5: Solve for x
   x = 4,426,536,084.16/76,132.49
6. Step 6: Final answer
   x = 58,142.54