Finding the Fourth Proportional to 128,061.59, 176,748.12 and 76,382.00

Step by Step Solution

1. Step 1: Write the proportion equation
   128,061.59 : 176,748.12 = 76,382.00 : x
2. Step 2: Convert to fraction form
   128,061.59/176,748.12 = 76,382.00/x
3. Step 3: Cross multiply
   128,061.59x = 176,748.12 × 76,382.00
4. Step 4: Simplify right side
   128,061.59x = 13,500,374,018.10
5. Step 5: Solve for x
   x = 13,500,374,018.10/128,061.59
6. Step 6: Final answer
   x = 105,420.95