Finding the Fourth Proportional to 101,011.94, 139,397.43 and 55,691.53

Step by Step Solution

1. Step 1: Write the proportion equation
   101,011.94 : 139,397.43 = 55,691.53 : x
2. Step 2: Convert to fraction form
   101,011.94/139,397.43 = 55,691.53/x
3. Step 3: Cross multiply
   101,011.94x = 139,397.43 × 55,691.53
4. Step 4: Simplify right side
   101,011.94x = 7,763,256,154.77
5. Step 5: Solve for x
   x = 7,763,256,154.77/101,011.94
6. Step 6: Final answer
   x = 76,854.84