Finding the Fourth Proportional to 61,035.90, 91,618.56 and 54,061.17

Step by Step Solution

1. Step 1: Write the proportion equation
   61,035.90 : 91,618.56 = 54,061.17 : x
2. Step 2: Convert to fraction form
   61,035.90/91,618.56 = 54,061.17/x
3. Step 3: Cross multiply
   61,035.90x = 91,618.56 × 54,061.17
4. Step 4: Simplify right side
   61,035.90x = 4,953,006,547.32
5. Step 5: Solve for x
   x = 4,953,006,547.32/61,035.90
6. Step 6: Final answer
   x = 81,149.07