Finding the Fourth Proportional to 101,011.32, 139,389.30 and 55,686.96

Step by Step Solution

1. Step 1: Write the proportion equation
   101,011.32 : 139,389.30 = 55,686.96 : x
2. Step 2: Convert to fraction form
   101,011.32/139,389.30 = 55,686.96/x
3. Step 3: Cross multiply
   101,011.32x = 139,389.30 × 55,686.96
4. Step 4: Simplify right side
   101,011.32x = 7,762,166,373.53
5. Step 5: Solve for x
   x = 7,762,166,373.53/101,011.32
6. Step 6: Final answer
   x = 76,844.52