Finding the Fourth Proportional to 56,136, 77,468.76 and 30,984.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,136 : 77,468.76 = 30,984.96 : x
2. Step 2: Convert to fraction form
   56,136/77,468.76 = 30,984.96/x
3. Step 3: Cross multiply
   56,136x = 77,468.76 × 30,984.96
4. Step 4: Simplify right side
   56,136x = 2,400,366,429.85
5. Step 5: Solve for x
   x = 2,400,366,429.85/56,136
6. Step 6: Final answer
   x = 42,759.84