Finding the Fourth Proportional to 56,030, 77,321.64 and 30,878.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,030 : 77,321.64 = 30,878.96 : x
2. Step 2: Convert to fraction form
   56,030/77,321.64 = 30,878.96/x
3. Step 3: Cross multiply
   56,030x = 77,321.64 × 30,878.96
4. Step 4: Simplify right side
   56,030x = 2,387,611,828.69
5. Step 5: Solve for x
   x = 2,387,611,828.69/56,030
6. Step 6: Final answer
   x = 42,613.10