Finding the Fourth Proportional to 101,619, 140,233.95 and 56,297.07

Step by Step Solution

1. Step 1: Write the proportion equation
   101,619 : 140,233.95 = 56,297.07 : x
2. Step 2: Convert to fraction form
   101,619/140,233.95 = 56,297.07/x
3. Step 3: Cross multiply
   101,619x = 140,233.95 × 56,297.07
4. Step 4: Simplify right side
   101,619x = 7,894,760,499.53
5. Step 5: Solve for x
   x = 7,894,760,499.53/101,619
6. Step 6: Final answer
   x = 77,689.81