Finding the Fourth Proportional to 83,428.09, 115,131.17 and 45,702.34

Step by Step Solution

1. Step 1: Write the proportion equation
   83,428.09 : 115,131.17 = 45,702.34 : x
2. Step 2: Convert to fraction form
   83,428.09/115,131.17 = 45,702.34/x
3. Step 3: Cross multiply
   83,428.09x = 115,131.17 × 45,702.34
4. Step 4: Simplify right side
   83,428.09x = 5,261,763,875.94
5. Step 5: Solve for x
   x = 5,261,763,875.94/83,428.09
6. Step 6: Final answer
   x = 63,069.45