Finding the Fourth Proportional to 101,007.07, 139,390.72 and 55,686.71

Step by Step Solution

1. Step 1: Write the proportion equation
   101,007.07 : 139,390.72 = 55,686.71 : x
2. Step 2: Convert to fraction form
   101,007.07/139,390.72 = 55,686.71/x
3. Step 3: Cross multiply
   101,007.07x = 139,390.72 × 55,686.71
4. Step 4: Simplify right side
   101,007.07x = 7,762,210,810.59
5. Step 5: Solve for x
   x = 7,762,210,810.59/101,007.07
6. Step 6: Final answer
   x = 76,848.19