Finding the Fourth Proportional to 40,742,142.72, 61,112,326.32 and 19,164,784.40

Step by Step Solution

1. Step 1: Write the proportion equation
   40,742,142.72 : 61,112,326.32 = 19,164,784.40 : x
2. Step 2: Convert to fraction form
   40,742,142.72/61,112,326.32 = 19,164,784.40/x
3. Step 3: Cross multiply
   40,742,142.72x = 61,112,326.32 × 19,164,784.40
4. Step 4: Simplify right side
   40,742,142.72x = 1,171,204,558,105,245.25
5. Step 5: Solve for x
   x = 1,171,204,558,105,245.25/40,742,142.72
6. Step 6: Final answer
   x = 28,746,759.00