Finding the Fourth Proportional to 61,030.06, 91,129.71 and 53,854.42

Step by Step Solution

1. Step 1: Write the proportion equation
   61,030.06 : 91,129.71 = 53,854.42 : x
2. Step 2: Convert to fraction form
   61,030.06/91,129.71 = 53,854.42/x
3. Step 3: Cross multiply
   61,030.06x = 91,129.71 × 53,854.42
4. Step 4: Simplify right side
   61,030.06x = 4,907,737,518.89
5. Step 5: Solve for x
   x = 4,907,737,518.89/61,030.06
6. Step 6: Final answer
   x = 80,415.09