Finding the Fourth Proportional to 101,981.30, 152,822.55 and 91,451.30

Step by Step Solution

1. Step 1: Write the proportion equation
   101,981.30 : 152,822.55 = 91,451.30 : x
2. Step 2: Convert to fraction form
   101,981.30/152,822.55 = 91,451.30/x
3. Step 3: Cross multiply
   101,981.30x = 152,822.55 × 91,451.30
4. Step 4: Simplify right side
   101,981.30x = 13,975,820,866.82
5. Step 5: Solve for x
   x = 13,975,820,866.82/101,981.30
6. Step 6: Final answer
   x = 137,042.98