Finding the Fourth Proportional to 65,961.79, 91,047.95 and 42,088.42

Step by Step Solution

1. Step 1: Write the proportion equation
   65,961.79 : 91,047.95 = 42,088.42 : x
2. Step 2: Convert to fraction form
   65,961.79/91,047.95 = 42,088.42/x
3. Step 3: Cross multiply
   65,961.79x = 91,047.95 × 42,088.42
4. Step 4: Simplify right side
   65,961.79x = 3,832,064,359.74
5. Step 5: Solve for x
   x = 3,832,064,359.74/65,961.79
6. Step 6: Final answer
   x = 58,095.21