Finding the Fourth Proportional to 60,308.51, 90,315.08 and 42,495.40

Step by Step Solution

1. Step 1: Write the proportion equation
   60,308.51 : 90,315.08 = 42,495.40 : x
2. Step 2: Convert to fraction form
   60,308.51/90,315.08 = 42,495.40/x
3. Step 3: Cross multiply
   60,308.51x = 90,315.08 × 42,495.40
4. Step 4: Simplify right side
   60,308.51x = 3,837,974,999.06
5. Step 5: Solve for x
   x = 3,837,974,999.06/60,308.51
6. Step 6: Final answer
   x = 63,639.03