Finding the Fourth Proportional to 64,510.68, 89,061.75 and 42,994.74

Step by Step Solution

1. Step 1: Write the proportion equation
   64,510.68 : 89,061.75 = 42,994.74 : x
2. Step 2: Convert to fraction form
   64,510.68/89,061.75 = 42,994.74/x
3. Step 3: Cross multiply
   64,510.68x = 89,061.75 × 42,994.74
4. Step 4: Simplify right side
   64,510.68x = 3,829,186,785.20
5. Step 5: Solve for x
   x = 3,829,186,785.20/64,510.68
6. Step 6: Final answer
   x = 59,357.41