Finding the Fourth Proportional to 101,105.48, 139,526.16 and 55,782.74

Step by Step Solution

1. Step 1: Write the proportion equation
   101,105.48 : 139,526.16 = 55,782.74 : x
2. Step 2: Convert to fraction form
   101,105.48/139,526.16 = 55,782.74/x
3. Step 3: Cross multiply
   101,105.48x = 139,526.16 × 55,782.74
4. Step 4: Simplify right side
   101,105.48x = 7,783,151,506.48
5. Step 5: Solve for x
   x = 7,783,151,506.48/101,105.48
6. Step 6: Final answer
   x = 76,980.51