Finding the Fourth Proportional to 76,146.08, 105,081.72 and 42,612.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,146.08 : 105,081.72 = 42,612.08 : x
2. Step 2: Convert to fraction form
   76,146.08/105,081.72 = 42,612.08/x
3. Step 3: Cross multiply
   76,146.08x = 105,081.72 × 42,612.08
4. Step 4: Simplify right side
   76,146.08x = 4,477,750,659.18
5. Step 5: Solve for x
   x = 4,477,750,659.18/76,146.08
6. Step 6: Final answer
   x = 58,804.74