Finding the Fourth Proportional to 70,442.61, 97,213.82 and 42,142.83

Step by Step Solution

1. Step 1: Write the proportion equation
   70,442.61 : 97,213.82 = 42,142.83 : x
2. Step 2: Convert to fraction form
   70,442.61/97,213.82 = 42,142.83/x
3. Step 3: Cross multiply
   70,442.61x = 97,213.82 × 42,142.83
4. Step 4: Simplify right side
   70,442.61x = 4,096,865,279.20
5. Step 5: Solve for x
   x = 4,096,865,279.20/70,442.61
6. Step 6: Final answer
   x = 58,158.91