Finding the Fourth Proportional to 61,042,572.10, 91,563,858.15 and 20,653,056.10

Step by Step Solution

1. Step 1: Write the proportion equation
   61,042,572.10 : 91,563,858.15 = 20,653,056.10 : x
2. Step 2: Convert to fraction form
   61,042,572.10/91,563,858.15 = 20,653,056.10/x
3. Step 3: Cross multiply
   61,042,572.10x = 91,563,858.15 × 20,653,056.10
4. Step 4: Simplify right side
   61,042,572.10x = 1,891,073,499,104,392.50
5. Step 5: Solve for x
   x = 1,891,073,499,104,392.50/61,042,572.10
6. Step 6: Final answer
   x = 30,979,584.15