Finding the Fourth Proportional to 101,098.42, 139,514.86 and 55,776.77

Step by Step Solution

1. Step 1: Write the proportion equation
   101,098.42 : 139,514.86 = 55,776.77 : x
2. Step 2: Convert to fraction form
   101,098.42/139,514.86 = 55,776.77/x
3. Step 3: Cross multiply
   101,098.42x = 139,514.86 × 55,776.77
4. Step 4: Simplify right side
   101,098.42x = 7,781,687,281.34
5. Step 5: Solve for x
   x = 7,781,687,281.34/101,098.42
6. Step 6: Final answer
   x = 76,971.40