Finding the Fourth Proportional to 94,140, 129,924.72 and 54,396

Step by Step Solution

1. Step 1: Write the proportion equation
   94,140 : 129,924.72 = 54,396 : x
2. Step 2: Convert to fraction form
   94,140/129,924.72 = 54,396/x
3. Step 3: Cross multiply
   94,140x = 129,924.72 × 54,396
4. Step 4: Simplify right side
   94,140x = 7,067,385,069.12
5. Step 5: Solve for x
   x = 7,067,385,069.12/94,140
6. Step 6: Final answer
   x = 75,073.14