Finding the Fourth Proportional to 100,833.39, 139,150.05 and 56,131.95

Step by Step Solution

1. Step 1: Write the proportion equation
   100,833.39 : 139,150.05 = 56,131.95 : x
2. Step 2: Convert to fraction form
   100,833.39/139,150.05 = 56,131.95/x
3. Step 3: Cross multiply
   100,833.39x = 139,150.05 × 56,131.95
4. Step 4: Simplify right side
   100,833.39x = 7,810,763,649.10
5. Step 5: Solve for x
   x = 7,810,763,649.10/100,833.39
6. Step 6: Final answer
   x = 77,462.08