Finding the Fourth Proportional to 39,109,852.56, 53,970,784.52 and 21,705,186.96

Step by Step Solution

1. Step 1: Write the proportion equation
   39,109,852.56 : 53,970,784.52 = 21,705,186.96 : x
2. Step 2: Convert to fraction form
   39,109,852.56/53,970,784.52 = 21,705,186.96/x
3. Step 3: Cross multiply
   39,109,852.56x = 53,970,784.52 × 21,705,186.96
4. Step 4: Simplify right side
   39,109,852.56x = 1,171,445,968,384,474
5. Step 5: Solve for x
   x = 1,171,445,968,384,474/39,109,852.56
6. Step 6: Final answer
   x = 29,952,707.35