Finding the Fourth Proportional to 70,466, 105,612.60 and 42,368.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,466 : 105,612.60 = 42,368.72 : x
2. Step 2: Convert to fraction form
   70,466/105,612.60 = 42,368.72/x
3. Step 3: Cross multiply
   70,466x = 105,612.60 × 42,368.72
4. Step 4: Simplify right side
   70,466x = 4,474,670,677.87
5. Step 5: Solve for x
   x = 4,474,670,677.87/70,466
6. Step 6: Final answer
   x = 63,501.13