Finding the Fourth Proportional to 61,077.43, 91,130.54 and 53,597.89

Step by Step Solution

1. Step 1: Write the proportion equation
   61,077.43 : 91,130.54 = 53,597.89 : x
2. Step 2: Convert to fraction form
   61,077.43/91,130.54 = 53,597.89/x
3. Step 3: Cross multiply
   61,077.43x = 91,130.54 × 53,597.89
4. Step 4: Simplify right side
   61,077.43x = 4,884,404,658.56
5. Step 5: Solve for x
   x = 4,884,404,658.56/61,077.43
6. Step 6: Final answer
   x = 79,970.70