Finding the Fourth Proportional to 55,643.12, 76,784.98 and 30,492.08

Step by Step Solution

1. Step 1: Write the proportion equation
   55,643.12 : 76,784.98 = 30,492.08 : x
2. Step 2: Convert to fraction form
   55,643.12/76,784.98 = 30,492.08/x
3. Step 3: Cross multiply
   55,643.12x = 76,784.98 × 30,492.08
4. Step 4: Simplify right side
   55,643.12x = 2,341,333,752.96
5. Step 5: Solve for x
   x = 2,341,333,752.96/55,643.12
6. Step 6: Final answer
   x = 42,077.69