Finding the Fourth Proportional to 102,479.82, 152,700.94 and 91,300.61

Step by Step Solution

1. Step 1: Write the proportion equation
   102,479.82 : 152,700.94 = 91,300.61 : x
2. Step 2: Convert to fraction form
   102,479.82/152,700.94 = 91,300.61/x
3. Step 3: Cross multiply
   102,479.82x = 152,700.94 × 91,300.61
4. Step 4: Simplify right side
   102,479.82x = 13,941,688,206.07
5. Step 5: Solve for x
   x = 13,941,688,206.07/102,479.82
6. Step 6: Final answer
   x = 136,043.25