Finding the Fourth Proportional to 38,961,370,820.72, 53,772,336,482.32 and 21,815,329,059.91

Step by Step Solution

1. Step 1: Write the proportion equation
   38,961,370,820.72 : 53,772,336,482.32 = 21,815,329,059.91 : x
2. Step 2: Convert to fraction form
   38,961,370,820.72/53,772,336,482.32 = 21,815,329,059.91/x
3. Step 3: Cross multiply
   38,961,370,820.72x = 53,772,336,482.32 × 21,815,329,059.91
4. Step 4: Simplify right side
   38,961,370,820.72x = 1,173,061,214,682,014,154,752
5. Step 5: Solve for x
   x = 1,173,061,214,682,014,154,752/38,961,370,820.72
6. Step 6: Final answer
   x = 30,108,314,722.29