Finding the Fourth Proportional to 101,459.52, 140,005.98 and 56,136.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,459.52 : 140,005.98 = 56,136.42 : x
2. Step 2: Convert to fraction form
   101,459.52/140,005.98 = 56,136.42/x
3. Step 3: Cross multiply
   101,459.52x = 140,005.98 × 56,136.42
4. Step 4: Simplify right side
   101,459.52x = 7,859,434,495.79
5. Step 5: Solve for x
   x = 7,859,434,495.79/101,459.52
6. Step 6: Final answer
   x = 77,463.75