Finding the Fourth Proportional to 60,720,636.94, 91,080,881.60 and 19,780,009.25

Step by Step Solution

1. Step 1: Write the proportion equation
   60,720,636.94 : 91,080,881.60 = 19,780,009.25 : x
2. Step 2: Convert to fraction form
   60,720,636.94/91,080,881.60 = 19,780,009.25/x
3. Step 3: Cross multiply
   60,720,636.94x = 91,080,881.60 × 19,780,009.25
4. Step 4: Simplify right side
   60,720,636.94x = 1,801,580,680,158,714.50
5. Step 5: Solve for x
   x = 1,801,580,680,158,714.50/60,720,636.94
6. Step 6: Final answer
   x = 29,669,989.82