Finding the Fourth Proportional to 101,373.31, 139,891.67 and 55,434.07

Step by Step Solution

1. Step 1: Write the proportion equation
   101,373.31 : 139,891.67 = 55,434.07 : x
2. Step 2: Convert to fraction form
   101,373.31/139,891.67 = 55,434.07/x
3. Step 3: Cross multiply
   101,373.31x = 139,891.67 × 55,434.07
4. Step 4: Simplify right side
   101,373.31x = 7,754,764,495.23
5. Step 5: Solve for x
   x = 7,754,764,495.23/101,373.31
6. Step 6: Final answer
   x = 76,497.10