Finding the Fourth Proportional to 65,961.73, 91,022.69 and 42,085.76

Step by Step Solution

1. Step 1: Write the proportion equation
   65,961.73 : 91,022.69 = 42,085.76 : x
2. Step 2: Convert to fraction form
   65,961.73/91,022.69 = 42,085.76/x
3. Step 3: Cross multiply
   65,961.73x = 91,022.69 × 42,085.76
4. Step 4: Simplify right side
   65,961.73x = 3,830,758,875.47
5. Step 5: Solve for x
   x = 3,830,758,875.47/65,961.73
6. Step 6: Final answer
   x = 58,075.48