Finding the Fourth Proportional to 78,060.11, 117,097.51 and 21,900.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,060.11 : 117,097.51 = 21,900.00 : x
2. Step 2: Convert to fraction form
   78,060.11/117,097.51 = 21,900.00/x
3. Step 3: Cross multiply
   78,060.11x = 117,097.51 × 21,900.00
4. Step 4: Simplify right side
   78,060.11x = 2,564,434,844.82
5. Step 5: Solve for x
   x = 2,564,434,844.82/78,060.11
6. Step 6: Final answer
   x = 32,852.05