Finding the Fourth Proportional to 112,719.59, 155,551.55 and 64,320.37

Step by Step Solution

1. Step 1: Write the proportion equation
   112,719.59 : 155,551.55 = 64,320.37 : x
2. Step 2: Convert to fraction form
   112,719.59/155,551.55 = 64,320.37/x
3. Step 3: Cross multiply
   112,719.59x = 155,551.55 × 64,320.37
4. Step 4: Simplify right side
   112,719.59x = 10,005,133,250.07
5. Step 5: Solve for x
   x = 10,005,133,250.07/112,719.59
6. Step 6: Final answer
   x = 88,761.26