Finding the Fourth Proportional to 101,153.81, 139,592.27 and 56,441.81

Step by Step Solution

1. Step 1: Write the proportion equation
   101,153.81 : 139,592.27 = 56,441.81 : x
2. Step 2: Convert to fraction form
   101,153.81/139,592.27 = 56,441.81/x
3. Step 3: Cross multiply
   101,153.81x = 139,592.27 × 56,441.81
4. Step 4: Simplify right side
   101,153.81x = 7,878,840,447.58
5. Step 5: Solve for x
   x = 7,878,840,447.58/101,153.81
6. Step 6: Final answer
   x = 77,889.70