Finding the Fourth Proportional to 94,172, 129,968.88 and 54,428

Step by Step Solution

1. Step 1: Write the proportion equation
   94,172 : 129,968.88 = 54,428 : x
2. Step 2: Convert to fraction form
   94,172/129,968.88 = 54,428/x
3. Step 3: Cross multiply
   94,172x = 129,968.88 × 54,428
4. Step 4: Simplify right side
   94,172x = 7,073,946,200.64
5. Step 5: Solve for x
   x = 7,073,946,200.64/94,172
6. Step 6: Final answer
   x = 75,117.30