Finding the Fourth Proportional to 92,970.70, 139,396.92 and 42,983.98

Step by Step Solution

1. Step 1: Write the proportion equation
   92,970.70 : 139,396.92 = 42,983.98 : x
2. Step 2: Convert to fraction form
   92,970.70/139,396.92 = 42,983.98/x
3. Step 3: Cross multiply
   92,970.70x = 139,396.92 × 42,983.98
4. Step 4: Simplify right side
   92,970.70x = 5,991,834,421.34
5. Step 5: Solve for x
   x = 5,991,834,421.34/92,970.70
6. Step 6: Final answer
   x = 64,448.63