Finding the Fourth Proportional to 56,136.38, 77,468.27 and 30,985.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,136.38 : 77,468.27 = 30,985.88 : x
2. Step 2: Convert to fraction form
   56,136.38/77,468.27 = 30,985.88/x
3. Step 3: Cross multiply
   56,136.38x = 77,468.27 × 30,985.88
4. Step 4: Simplify right side
   56,136.38x = 2,400,421,975.76
5. Step 5: Solve for x
   x = 2,400,421,975.76/56,136.38
6. Step 6: Final answer
   x = 42,760.54