Finding the Fourth Proportional to 101,153.50, 139,591.83 and 56,441.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,153.50 : 139,591.83 = 56,441.50 : x
2. Step 2: Convert to fraction form
   101,153.50/139,591.83 = 56,441.50/x
3. Step 3: Cross multiply
   101,153.50x = 139,591.83 × 56,441.50
4. Step 4: Simplify right side
   101,153.50x = 7,878,772,272.95
5. Step 5: Solve for x
   x = 7,878,772,272.95/101,153.50
6. Step 6: Final answer
   x = 77,889.27