Finding the Fourth Proportional to 78,603.56, 108,437.86 and 53,101.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,603.56 : 108,437.86 = 53,101.72 : x
2. Step 2: Convert to fraction form
   78,603.56/108,437.86 = 53,101.72/x
3. Step 3: Cross multiply
   78,603.56x = 108,437.86 × 53,101.72
4. Step 4: Simplify right side
   78,603.56x = 5,758,236,674.40
5. Step 5: Solve for x
   x = 5,758,236,674.40/78,603.56
6. Step 6: Final answer
   x = 73,256.70