Finding the Fourth Proportional to 112,537,423.86, 155,317,889.54 and 64,843,543.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,537,423.86 : 155,317,889.54 = 64,843,543.72 : x
2. Step 2: Convert to fraction form
   112,537,423.86/155,317,889.54 = 64,843,543.72/x
3. Step 3: Cross multiply
   112,537,423.86x = 155,317,889.54 × 64,843,543.72
4. Step 4: Simplify right side
   112,537,423.86x = 10,071,362,360,172,608
5. Step 5: Solve for x
   x = 10,071,362,360,172,608/112,537,423.86
6. Step 6: Final answer
   x = 89,493,450.40